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Post by Mr. Wilcox on Sept 29, 2008 22:24:50 GMT -6
In class you have been discussing the phases of the moon. The two most common answers Mr. Kruse and I have heard are: 1) The phases are caused by the shadow of the earth which blocks part of the moon from being seen. 2) The phases are caused by the moon going around the earth and the change in moon position changes how much of the moon we see lit up.
Which idea makes the most sense to you and what evidence do you have to support your idea?
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Post by jami koethe on Sept 30, 2008 7:58:04 GMT -6
The second idea makes the most sense too me. The reason i believe this is because we have tested both ideas. And the shadow one is not possible. It is believable at first, but then the shadow of both the moon and the earth cast different shadows. Meaning as the moon we see curves in, the shadow it really should have casted should of made the shadow line of the moon curve out. But it didnt, concluding that the shadow of the earth can NOT casue the phases of the moon. I believe that the phases are casued by the the different angles of the moon, sun, and earth. When the moon and earth are at different angles, and tilted different ways, you will see the moon differently on one side of the earth then you will on the other, becasue the sun's rays will be reflecting off the moon and will then allow you too see different parts of the moon, also known as the phases of the moon.
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Post by Radheeka Sharma on Sept 30, 2008 8:02:17 GMT -6
I think that the 2nd isea makes more sense because when the moon is at certain posostion and the earth is at a certain posistion. You will be able to see the moon's diffrent phases.
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Post by taylor Roese on Sept 30, 2008 8:03:48 GMT -6
i think the second idea makes the most sence. I think the phases are causes by the moon rotating around the Earth, and as it rotates and were it is depends on what kind of moon you see.
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Post by Anh Nguyen on Sept 30, 2008 8:05:47 GMT -6
The second idea, the phases are caused by the moon going around the Earth and the change in moon position changes how much the moon we see lit up, makes the most sense to me. Why the first one does not is because when the moon is at its 'Waxing Gibbous' phase, the Earth cannot create the shape of the part that is not lit up. The reason why the second answer makes more sense to me is because the moon orbits around the Earth while the Earth rotates around the Sun. The angles of the Earth, Moon, and Sun determine the phases of the Moon.
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Post by Ally Swartz on Sept 30, 2008 8:41:39 GMT -6
the second idea makes since because the earth cant block light to put a shadow on the moon when the moon is out to the side of the earth, like a 90 degree angle with the sun, earth and moon. the only time the earth blocks the light from the moon is during a lunar eclipse.
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Post by Tatiana Eagles on Sept 30, 2008 8:50:25 GMT -6
The fist idea is an eclipse.
If the shadow of the earth covers the moon from the sun completly, then I believe that is the Lunar Eclipse. And when the Moon blocks the Sun from the earth completly, then that is the Solar Eclipse. I might have the names of them mixed up, but that is what happens when the moon/earth is covered by shadows.
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Post by Carmen Ballagan on Sept 30, 2008 8:51:55 GMT -6
I think the 2nd reason seems the most possible to me because since we made models to test ideas, they helped people understand better. Also, when we tested the ideas, the Earth and moon were always in a certain position for the sun to shine on them.
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Post by Michael Berntson on Sept 30, 2008 9:34:03 GMT -6
I think that the second idea is the one that makes the most sense to me at least because of what i saw when we did the model of the moon, the earth, and the sun with the overhead as our sun. This showed how the movement of the earth, moon, affect how the moon is lit up and also what kind of shadow it projects too also as well.
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Post by caitlinmarshall on Sept 30, 2008 9:39:41 GMT -6
Well, the second makes sense because that explains why the moon's not always the same shape. The first basically explains an eclipse.
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Post by zain quntar on Sept 30, 2008 9:39:51 GMT -6
i think the 2nd idea works beacuse when you make the models it helps you understand what teh moon looks like from a point of view.
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Post by *nicodi rae burgett* on Sept 30, 2008 9:41:02 GMT -6
i think the 2nd idea makes more sence because because we have been doing projects like one with the overhead how we had to see the different expales as the moon,earth,and sun and we seen how the suns light shines on it.
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Post by andydorn on Sept 30, 2008 10:19:32 GMT -6
I think that the idea about the shadow of the earth creating phases doesn't work because the earth is round. If you look at the phases, some phases are circular, yet still have a black portion that is shaped like a cressent. For that to happen, the earth would have to be donut shaped. (Inside of the "Donut," would form shadow.)
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Post by Genna Pace on Sept 30, 2008 10:20:51 GMT -6
i think the 2nd idea makes the most sense because when the moon moves around the earth that effects how much sun is shining on the moon and how much of it is covered ;D well yeah thats at least what i think but i might be wrong
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Post by chrisjones on Sept 30, 2008 10:24:35 GMT -6
Isn't this already a known fact? Like couldn't you go on wikipedia and just search it and figure it out? That'd be faster. I think its all the angle of the sun, moon, and earth.
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