Sunday, September 19, 2010

Hypotheses vs. Theories

My Very Educated Mother Just Served Us Nine Pizza-pies.  When I learned to memorize the planets, my teacher taught me that mnemonic device.  But since Pluto is no longer considered a planet that needs to change.  Read the following article about Pluto.  Is Pluto No Longer a Planet? from National Geographic. 

Why is Pluto no longer considered a planet?  What is the difference between a hypothesis and a theory?  Can you prove a hypothesis?  When does a hypothesis become a theory?

42 comments:

  1. Personally, I love Pluto.

    According to the article, there has been much debate among scientists about whether Pluto should still be considered a planet. The answer: technically, no. Planets are classified as objects that orbit around the sun and, by the power of their own gravity, have become round. Therefore, the International Astronomical Union has referred to Pluto as a DWARF planet.
    A hypothesis and a theory are not the same; hypotheses are educated guesses that you expect to occur from a certain outcome, while theories are factual principles that have been tested, proven, and accepted.
    However, yes, you may prove a hypothesis. As long as you have means of testing and examining the data, an analyzed hypothesis may become a theory once the information is proven.
    This all relates to the unit we are studying right now, because early on we learned and discussed the differences between theories and hypotheses; we were even able to study objects (like the mystery box and the magic rope) to come up with our own predictions.

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  2. Pluto, the planet farthest from the sun. Pluto is under "debate" if it qualifies as a planet. Unfortunately, it does not meet the International Astronomical Union's rules: It has to orbit the sun and large enough, due to its force of gravity, become round. Now the difference between an hypothesis and theory is the hypothesis is merely a guess backed up by some information, but a theory is a hypothesis with all needed information to prove it. To prove a hypotheses you need all the information you don't have confirmed. Poor Pluto, all it wanted was to be a planet.

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  3. Why is Pluto no longer considered a planet? What is the difference between a hypothesis and a theory? Can you prove a hypothesis? When does a hypothesis become a theory?

    Pluto is no longer considered a planet because it does not meet the requirements to be one. These requirements are:
    1)The planet must orbit the sun.
    2)It must be large enough to have a gravitational pull big enough to make itself naturally round.
    Since Pluto doesn't meet these standards, it is considered a dwarf planet instead of a full planet.
    A hypothesis and a theory are two ideas that have a scientific meaning. A hypothesis is an equation based on gathered information in order to prove in idea or theory. Yes, you can always prove a hypothesis. A theory is a hypothesis that has been proved so many times, it has been excepted as a fact. When enough scientists have done an experiment and have gotten the same results, they conclude it as a theory.

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  4. Why is Pluto no longer considered a planet? What is the difference between a hypothesis and a theory? Can you prove a hypothesis? When does a hypothesis become a theory?


    According to the International Astronomical Union, the definition of a planet is an object that orbits the sun and is large enough to have become round through the force of its own gravity. While Pluto does orbit the sun, though in its own, rather elliptical fashion, and on a plane different from all the planets, it is definitely not round.

    On a different topic, there is a major difference between a hypothesis and a theory. A hypothesis is an explanation for a set of observations. A hypothesis can never be absolutely proven beyond a shadow of a doubt. Any observations or results that seem to prove it are said to "support" it. This is because even if a hypothesis seems absolutely true, it may be proved wrong with just one genuine observation. An example is the hypothesis long ago that the world was flat. A theory is a hypothesis that has been supported by so many observations and results of experiments that it has been accepted by the scientific community as an accurate explanation for all those observations. A hypothesis becomes a theory when most scientists agree that it has enough observations supporting it. An example of a theory is the general consensus the theory of evolution. While we may think that this is definite, because every observation and experiment done so far has supported it, it is not definite and perhaps never will be.

    In conclusion, Pluto is designated as a dwarf planet because it has an eccentric orbit and is not round, hypotheses are explanations for observations, and theories are hypotheses supported by many observations.

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  5. Is Pluto a planet? In my personal opinion, yes pluto is a planet however the International Astronomical Union would beg to differ. According to the set standards, pluto must orbit the sun, be big enough to orbit the sun, as well as be big enough to make itself naturally round. However little pluto doesn't meet all of these requirements and so is not a full planet or as Owen Gingerich put it a classical planet, but a dwarf planet.

    The difference between a hypothesis and a theory is simply that, while a hypothesis is a prediction of the outcome of an experiment a theory is something that while is not clear cut fact, it is generally accepted as a truth. No you can not prove a hypothesis, one can only support it with evidence collected from an/manny experiments. Having said that, a hypothesis can become a theory after being supported several times by different scientists.

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  6. "Is Pluto no longer a planet?" In my opinion, 100%, Pluto is a planet; but others have their own opinion including scientists and astronomers. National Geographic News shared with us that the International Astronomical Union said that Pluto is not a planet, it is a dwarf-planet. Many scientists disagreed with the opinion, like Andy Cheng that said that the new rules are not clear enough to clearify that Pluto is a Dwarf-Planet.
    The difference between a hypothesis and a theory is that the hypothesis is the prediction of the theory. You can also prove a hypothesis by multipule experiments. A hypothesis becomes a theory after it is experimented and proven correctly.

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  7. According to the article , Pluto is no longer considerd a planet because its "too small" and is too far from the sun . Also , scientists believe it should be considerd a Dwarf planet instead.The difference between a hypothesis and a theory are that a hypothesis is a educated guess while a theory is a sugestion about a something. In whether or not you can prove a hypothesis, yes you can prove a hypothesis because it is a question. A hypothesis becomes a theory when it cant be prove or disapproved.

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  8. Pluto has had a major effect on the forming of our solar system, and yet it is not considered a planet. This is because Pluto doesn't meet the standards of planets. These standards are having to rotate around the sun and to become round due to the force of its own gravity. So now, according to the International Astronomical Union, Pluto is under the category of "dwarf planet". I still feel that Pluto is a planet, because that is what I grew up knowing. There are other dwarf planets like pluto though, and they aren't considered planets, so it's just hard to tell where we draw the line.

    A hypothesis is an educated guess based on observations, that can be tested. A theory is an explanation for something is widely accepted, so it's believed to be true. You can not prove a hypothesis, but you can find evidence to support it. You can also disprove a hypothesis, but you CANNOT prove it. A hypothesis can become a theory after there is lots of evidence to back it up by different people and it is commonly accepted as fact.

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  9. Pluto, long known as the smallest and farthest of all the planets in our solar system, is no longer considered a planet. Due to the International Astronomical Union's new set of standards for planets, pluto is now a dwarf planet. Although many people who grew up learning that Pluto is our 9th planet, they will have to get used to fact that now we only have 8 planets and little Pluto will probably scarcly be heard of by future generations of children. This article is a good example of the difference between hypotheses and theories. While a hypothesis is just a proposed idea brought about by a question, a theory is a well tested conclusion supported by plenty of evidence. Hypotheses can easily be wrong and are in no way a fact. No matter how much evidence supporting a theory, they can still be proved wrong or changed by later evidence. Using this article as an example, the theory that Pluto was a planet was well tested and widely suggested as true. No matter how much evidence supported that theory, it was later porved wrong. This article is very profficent at displaying the differences between a hypothesis and a theory.

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  10. Scientists used to call Pluto an official planet until just a few years ago. However, according to the scientific community, it does not meet the requirements needed to be a planet. According to them, it is not big enough to become round by its own gravity, one of the two requirements of being a planet.

    There is still ongoing scientific dispute, though. Some scientists claim that Pluto should be hailed as a "dwarf planet" within our solar system while calling the other eight "classical" planets. Owen Gingerich of Cambridge, Massachusetts thinks that this would be suitable for Pluto, a planet which is too renowned to be completely removed from our solar system.

    A hypothesis is a solution to a scientific question and can be supported or disproved. A theory, however, is a hypothesis that has been supported with much experimentation and data. Though it can still be proven false, it is accepted by most scientists as true.

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  11. Pluto is no longer being called a planet because it doesn't not meet the standards of a "full-fledged" planet set by the International Astronomical Union - to orbit the sun and be large enough to have become round due to the force of its own gravity. The IAU is now calling Pluto a dwarf planet. There is still some debate over whether this title is fitting or even just. Yet, all new textbooks and to call Pluto a dwarf planet. A hypothesis is a statement that must be proved by conducting an experiment (or series of experiments). A hypothesis becomes a theory when many scientists test it and all come up with the same results. So, a hypothesis has to be very well-supported to be considered a theory. Yet theories are not facts. Theories aren't set in stone and can be changed or revoked as a result of contradicting evidence presented through another experiment. As of today, Pluto's "planet-status" is floating between a hypothesis and a theory. Most educated professionals believe calling it a dwarf planet is a reasonably trustworthy theory, but other people refuse to let go of "MVEMJSUNP" that easily.

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  12. Why is Pluto no longer considered a planet? What is the difference between a hypothesis and a theory? Can you prove a hypothesis? When does a hypothesis become a theory?

    In recent studies, the International Astronomical Union has stripped Pluto of it's classification as a "planet" and now considers it a "dwarf" planet. This new title stems from the fact that Pluto does not meet with the IAU's definition of a legitimate planet. According to the IAU, "A full-fledged planet is an object that orbits the sun and is large enough to have become round due to the force of its own gravity." It should also dominate its neighborhood. Pluto is only two times larger than its own moon therefore it does not meet these standards. It is now considered a "dwarf" planet by the IAU.

    A hypotheses is a proposed scientific explanation for a set of observations. One must always be able to test a hypothesis to either prove or disprove. A theory often starts out as a hypothesis. When evidence proving it accumulates, it becomes widely supported and most scientists consider it a theory.

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  13. Pluto is no longer considered a planet. This is a drastic change for those of us who grew up with 9 planets in the solar system. It has been demoted to the status of dwarf planet, because the official IAU guidelines state that a planet must orbit the sun, and be round from the force of its own gravity.

    A hypothesis is an inference based on observation. A theory is a hypothesis that is accepted as truth, because of overwhelming evidence to prove it, as well as the consent of the majority of the scientist in the particular field. Most theories began as hypothesis. Although you cannot fully prove a hypothesis, if there is enough evidence, it will become a theory that is accepted by the scientific community.

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  14. Alison F. 4th periodThu Sep 23, 04:20:00 PM 2010

    In my opinion, Pluto is a planet and will always be. Though according to the International Astronomical Union, it is not. They believe that something can only be classified as a planet if it orbits the sun and is large enough to have become round due to the force of its own gravity. Pluto fails to meet these standards so now they classify it as a dwarf planet. A hypothesis is a guess based on observations. It is a proposed explanation. A theory is something that has evidence to back it up. They both can be proven wrong. A hypothesis turns into a theory when it has been tested and has a good amount of evidence that proves it could be true.

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  15. The reason that Pluto is no longer considered a planet is because it doesn’t orbit the sun and it isn’t big enough to become round from the force of its own gravity. Instead, now Pluto is only being called a dwarf planet. Although it is now known as a dwarf planet, some scientists still feel as though Pluto should be classified as a planet, just like it was before.

    The difference between a theory and a hypothesis is that a theory is a well-tested explanation that unifies a broad range of observations. A hypothesis, however, is a possible explanation for a set of observations. This means that theories are based off of many tests instead of a prediction for something that was observed. Theories are usually more accurate than a hypothesis. You can never really prove a hypothesis because they need to be tested many times. After doing the process of many different tests and getting the same results, only then will a hypothesis mostly likely be considered a theory.

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  16. Pluto is no longer a regular sized planet. It has been classified as a dwarf planet. While there are now only 8 full planets in the solar system, there are now 5 other dwarf planets that include Pluto, Ceres, Makemake, Haumea and Eris. While the other dwarf planets are outside Uranus' reach, Ceres is located between Mars and Jupiter (giving its name). Further looking into, some resources say that Ceres is a dwarf planet is a dwarf planet because it has enough body mass to shape itself (which is contradicting to the Pluto theory). Most scientists will never agree on anything in the scientific world for all of this contradicting information. Which is exactly what a theory is. A theory is a logical statement that seems to answer problems with the given information found or created. Of course a theory may never become proven 100% true, for it would then be called a law. The law of the speed of light so far is consistent and cannot be disproved, while the evolution, the Big Bang theory and Genesis are questioned again and again. While theories may never be proven certain, hypotheses can be proven by testing them. They can also be disproved sometimes by retesting them.

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  17. Pluto is not considered a planet because a planet orbits the sun and is large enough to have become round due to the force of its own gravity. Pluto is not considered to meet these conditions so it is considered a dwarf planet. Hypothesises try to answer questions and have to go through tests. Theories are hypothesises that have gone through many tests and from different people and is assumed to be right but not proven. You can not prove a hypothesis. Hypothesises become theories when they been attepted many times and by different people.

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  18. According to the International Astronomical Union, a full-fledged planet is an object that orbits the sun and is large enough to have become round due to the force of its own gravity. Because Pluto doesn't meet these standards, the IAU classifies Pluto as a dwarf planet. A hypothesis is a possible explanation for a set of observations or possible answer to a scientific question. A theory is a well-tested explantion that unifies a broad range of observations. To be able to prove a hypothesis you must be able to test it first and some are proven by performing contrlled experiments. After awhile, scientists can't prove their hypothesis and after a broad range of observations it becomes a theory.

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  19. There is a lot of debate going on right now involving Pluto and whether or not it should be classified as a planet or a dwarf planet. The IAU (International Astronomical Union) has said that Pluto is a dwarf planet because it does not meet the requirements to be a planet. According to the IAU, a planet orbits the sun and is big enough to have be round because of the force of its gravity. But why is the debate coming now when Pluto has been classified as a "full-fledged" planet for so many years?

    A hypothesis is a guess based on observation that can be proved through experimentation, while a theory is proposed explanation for something. So a hypothesis becomes a theory when it has been tested over and over by many scientists and they have all gotten the same results. But theories are not "set in stone" by any means. So, if one scientists finds a problem with a theory and tests to see if s/he is correct, the theory wouldn't be considered a theory anymore.

    As far as Pluto's status as a planet, it is something that is still being debated and I personally think that if scientists are not considering Pluto to be a planet, then they should be testing to see if the other eight planets fall under the standards set by the IAU. They may find something that would change the way the classify planets, therefore I think that Pluto's planet status right now is just a hypothesis.

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  20. Pluto is no longer considered a planet because it doesn't fit the standards made by the International Astronomical Union. According to the IAU a planet must be round from the force of it's own gravity, and orbit the sun. Since Pluto doesn't fit these standards it is now classified as a dwarf Planet.

    A hypothesis is an educated guess based on past knowledge or experiments, and can be tested. A hypothesis can be disproved or supported. A theory normally starts as a hypothesis, but turns into a theory by having so much scientific evidence to prove it is true. A theory can be disproved.

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  21. Why is Pluto no longer considered a planet? What is the difference between a hypothesis and a theory? Can you prove a hypothesis? When does a hypothesis become a theory?

    To me, Pluto is still considered a planet, but to the International Astronomical Union it doesn't meet the specific requirements. The requirements are: a. A planet must orbit the sun, and b. it must clear the neighborhood around its own orbit.

    A hypothesis is a proposal intended to explain certain facts or observations formed in an if, and, then statement. A theory is an analysis of a set of facts. When testing a hypothesis, once it becomes true, it becomes either scientific law or an accepted theory.

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  22. According to the International Astronomical Union, in order to be classified as a "planet", the object must orbit the sun and be big enough to have become round due to the force of its own gravity. In Pluto's case, it is not big enough to fall into this category. Therefore, Pluto is no longer considered a "planet". The IAU is classifying Pluto as a dwarf planet.

    A hypothesis differs from a theory for multiple reasons. First, a hypothesis is a propostion or explanation based on observations or questions. Second, a theory has already been proven and can contain principles or laws. Therefore, a hypothesis may become a theory after it has been tested and supported.

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  23. According to the International Astronomical Union a “full-fledged planet is an object that orbits the sun and is large enough to have become round due to the force of its own gravity”. Because Pluto isn’t round enough to meet these standards Pluto is consider a dwarf planet. But some scientists don’t agree with this claim, Andy Cheng a planetary scientists, says that the new rules aren’t clear enough to classify how round a planet must be, and says he will continue to believe Pluto is a planet.

    The difference between a hypothesis and a theory is that, a hypothesis is a possible explanation for a set of observations or possible answer to a specific question that can be tested, while a theory is a well-tested explanation that unifies a broad range of observations. A hypothesis can eventually become a theory after it has been tested many times and explains a broad range of observations.

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  24. Due to failure to orbit the sun and to be large enough to become round due to its own gravity's force, Pluto is no longer considered a planet. The International Astronomical Union currently classifies Pluto as a dawrf planet. Astronomer and historian Owen Gingerich believes that the big eight planets that orbit the sun should be called classical planets while the rest, including Pluto, are merely called dwarf planets.
    Both hypotheses and theories differ as hypotheses are simply scientific guesses while theories, which begin as hypotheses, have been proven by a number of people plenty of times. A hypothesis is proven with experimentation. If the experiment is repeated enough and the results are similar and consistent, it then becomes a theory.

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  25. Pluto is not considered a planet, because official IAU guidelines say that Pluto is a "dwarf" planet. In my opinion Pluto should be considered a planet.

    When there is enough facts behind the hypothesis it becomes a theory. Hypothesis can be proven.

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  26. Mason H. 7th PeriodThu Sep 23, 07:34:00 PM 2010

    What actually is Pluto? It is a dwarf planet, and not a "classical" planet. This is so because it does not orbit around the sun and it is not round because of its own gravity. The concept in which Pluto was a planet was not a theory, but still a hypothesis. A theory is always supported but a hypothesis is not - neither can be fully proved though. A hypothesis must have been supported without disprovals by many, many tests to become a theory. The concept of Pluto being a planet did not have enough support and had too much disprovals to be a theory - and to be a planet.

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  27. From the article, it clearly states that Pluto, is not a planet. Pluto was once called a planet, but because it did not meet all the IAU requirements of being a planet, it is now called a dwarf planet. However, there is still a debate on which category Pluto should be in.
    A hypothesis is a educated guess that is derived from observations and data. With enough support from multiple tests and approval from other scientists, a hypothesis can become a theory. A theory is a well tested explanation that unifies a broad range of observations. A hypothesis cannot be a complete fact, but with enough evidence to back it up, it can become a theory.

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  28. Sabrina L., 7th periodThu Sep 23, 08:39:00 PM 2010

    In the article, it stated that Pluto is no longer a planet. Based on the IAU, a planet is an object that orbits around the sun and is large enough to be round due to the force of its own gravity. Pluto doesn't meet these standards; therefore, it is not a planet. Many people are questioning the definition of a planet. For example, what do scientists mean by the term "round"? How round should a planet be? Now, planets are classified in 2 different ways: classical and dwarf.

    A hypothesis is a proposed scientific explanation based on observations. A hypothesis must be testable in order to support or oppose it. You can never prove a hypothesis, but once it has been well-tested by many scientists, it can become a theory. A theory is a well-supported hypothesis that has been proved many times with the same results. With enough evidence and support, scientists consider a hypothesis a theory.

    -Sabrina Leung, 7th period

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  29. For years, there has always been the argument whether Pluto is a planet or not. According to the International Astronomical Union, a planet is an object that orbits the sun, and is large enough to become round, due to its own force of gravity. Since Pluto supposedly doesn't meet these classifications, it is now considered a dwarf planet, not a standard planet. However, some people do not agree to this. Andy Cheng, planetary scientist, questions this theory by asking, "How round is round?" and continues to classify Pluto as an ordinary planet.

    Moving on, this issue with Pluto can be considered a theory, not a hypothesis. A hypothesis and theory are similar, but different. A hypothesis is a statement that can be proven by experimentation, and explains anything within the natural world. If a hypothesis is supported enough, it can be considered true, and becomes a theory. A theory is a hypothesis that most people agree upon, mainly due to multiple experiments that have the same results. However, a theory can be disproved by a contradicting hypothesis.

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  30. Is Pluto a planet or not? That is a hard question to answer. I believe that pluto is a planet and a giant moon. According to the International Astronomic Union what a planet needs to do is orbit the sun and it has to be large enough to have become round due to the force of it's own gravity. Unfortunately, Pluto does not meet the expectations of the IAU and they consider it as a dwarf planet.

    Now the difference between a hypothesis and a theory is that a hypothesis is a guess of an experiment or data, and a theory is the statement of an observation. A hypothesis can be proven by experimenting with things.

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  31. This article, Pluto is a hot topic that is being debated over whether it is a planet or not. The topic of Pluto being a planet isn't proved, because it doesn't meet the required standards that are: to be large enough to push itself to be round because of the gravity pushing against it, and to orbit the sun. Pluto unfortunatly doesn't fit in with those requirements and is considered a dwarf planet.
    A hypothesis is an inference that is based on an observation. A theory is a proved fact, which is a hypothesis that has been proven over and over, leading it to become a fact. Yes, you can prove a hypothesis, if you are able to put it to a test, and the hypothesis is true. A hypothesis becomes a theory when it is repeatedly proven to be true.

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  32. For many years we considered Pluto as a planet. Still it is not officially known if Pluto is an actuall planet or not. There are certain standards a planet has to meet in order to be called a planet. The standards are:
    -it has to orbit the sun
    -it has to be large enough to become round due to the force of gravity.
    Since Pluto does not meet these standards it is considered as a dwarf planet.

    A hypothesis is an educated guess based on observations. You test a hypothesis to see if it is right. A theory is based on a hypothesis but has evidence. If a hypothesis is proven true then it can turn into a theory. But if proven false it can not turn into a theory.

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  33. A hypothesis is a possible explanation for a set of observation that can be proven. As for a theory is a well-tested explanation that unifies various range of observations. A Hypothesis becomes a theory when it is well explained, unlike Pluto’s event. Apparently Pluto is not a plain planet because it doesn’t meet the qualifications like being large enough to have become round due to the force of its own gravity, therefore Pluto is a dwarf planet. However, in my opinion, I have to agree with Andy Chang. How is round, round? Sometimes I wish they would make Pluto a plain planet just because that was what it was originally believed. I mean, who knows, soon they will probably determine that the sun is not a star because it is too big.

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  34. pluto is no longer considered a planet. It is now classified as a dwarf planet. Even though there is still some debate on this subject, I feel that Pluto can be considered not a planet. Pluto is very similar to a comet. It is very icy just like comets. Also, Pluto is located in the Kuiper Belt. The kuiper belt contains millions of comets. Pluto can be just a very large member of it. "A full-fledged planet is an object that orbits the sun and is large enough to have become round due to the force of its own gravity." Pluto does not meet these standards. Also, it is only two times bigger than its biggest moon. A planet should be way bigger than its moon to be classified as a planet

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  35. I think it sucks that they all of a sudden change the title of Pluto. I grew up with the idea of the 9 planets in our solar system and well I feel that we were lied to if that's not true anymore. I feel that Pluto has been considered a planet for a long time so it should just stay that way it even has its own moon just like it shows in the picture on the article. Pluto isn't considered a planet because I guess that it doesn't orbit the sun and that its not round enough. The difference is that a hypothesis becomes a theory and a hypothesis is a guess based on observations. A hypothesis becomes a theory when its been tested many times and can't really be proved.

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  36. Pluto is no longer considered a planet because of it's roundness? I personally think that pluto is big enough to be considered a planet not that silly name they gave it " Dwarf Planet". However the recent saying is that it is not a planet and that's how the schools are going to teach it. A hypothesis is a well backed up inference that uses an IF AND THEN statement. A hypothesis can be proven or declined based on test. Also a hypothesis is only a hypothesis is it can be tested otherwise according to me it's a statement. A theory is a hypothesis that has been proven and proven over and over again so it is considered to be the truth. However it can be changed. YOu cannot always prove the hypothesis but if it does and becomes a theory then the scientific community will be accepted.

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  37. Betsy Paredes 6th periodThu Sep 23, 10:41:00 PM 2010

    Pluto is no longer a planet because it is about 0.07 times the mass of the other objects in its orbit and it has to be large enough to pull itself into a sphere or become round. Pluto isn't a planet also because it isn't dominant in its orbit and it doesn't orbit the sun.

    I think the difference between a hypothesis and a theory is that a hypothesis is an explanation for an observation or a scientific problem that can be tested and a theory is a hypothesis supported by evidence, unlike a hypothesis it is not a guess, theories are based on facts.I think you can prove a hypothesis. You can either prove it wrong or right by testing it and doing experiments. I think that a hypothesis becomes a theory when it is proven right because if a hypothesis is proven right then it becomes a theory because hypothesis are only predictions and theories are based on facts.

    This article relates to what we are learning in class because in class we learned and took notes on differences of a hypothesis and theories. We took notes on inferences and observations that help us set up a hypothesis. We also did labs and experiments to help us know the differences of a hypothesis and theorires and we learned how to use the IF, AND, THEN statements.

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  38. In this article it says that Pluto is being debated on wither it should be considered a planet or not. The definition of a planet is an object that orbits around the sun and by the power of their own gravity has become round. Pluto does not fit this definition. Many people think a hypothesis and a theory are the same thing, this is wrong. A theory is a hypothesis with all the needed information to prove it; well a hypothesis is a guess that is backed up with research observations and other information. This has to do with what we are learning in class because we are learning about hypothesis and how to make them correctly.

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  39. Pluto is no longer considered a planet. The International Astronomical Union says so, textbooks say so, the general public has accepted the fact. The standards of a "planet" is that it is an object the orbits around the sun and is large enough to have become round due to its the force of its own gravity. Pluto doesn't meet those standards, so it was classified as a dwarf planet.

    A hypothesis and a theory may seem very similar to most people, and they do have their similarities.

    A hypothesis is a proposed scientific explanation for an observation. It is proposed for an experiment and comes in IF/AND/THEN form. It hasn't been tested before. It is only a "prediction".

    A theory is an explanation based on well tested results and logical facts. It is well supported by much scientific evidence and is accepted by most people.

    You can prove a hypothesis by experimenting. If the results come out as expected, you have just proven your hypothesis. If the results come out differently, you have disproved your hypothesis.

    A hypothesis becomes a theory when it is proven to be true and has lots of evidence supporting the results.

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  40. Many scientists until just recently have said that pluto isn't a planet and according articles that I have read they say no, because it is just a big planet looking gas mass. Even though it looks like a planet I dont think it does, we have never actually been there and we probably wont have the technology to reach it. But until then it remains still unknown and is still question able.

    Julian Herns 6* Biology

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  41. For most people, Pluto is no longer considered a planet. For scientists, it is under debate. National Geographic states that according to the International Astronomical Union, it does not fit their standards of being a planet. They have decided to classify it as a dwarf planet.

    A hypothesis is a prediction based on observations. A theory is a system of ideas intended to explain something. You can't prove a hypothesis but you can support it with evidence collected from your experiments. A hypothesis becomes a theory after it has been experimented and is proven correctly.

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  42. Based on this article Pluto is no longer conisidered a planet. It appears that the International Astronomical Union has proven that Pluto doesn't fit the criteria needed to be referred to as a planet.

    A hypothesis is a prediction that can be tested. A theory is a well tested explanation that gives reasons for the observations. A hypothesis can be proven by a series of labs or experiments.

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