Geocentric
Heliocentric
Today in class we first continued to work on our simulations. For the group I was in, we finished discussing our answers. We had some disagreements but finally came to a conclusion. Then, Mr. Finley came over to our group to explain the next lesson. He told us to think about the following simulation. You are playing a board game in a car. Is the board game moving? Many would say no. We say no because to our eyes we see the board game staying still, but would it be moving to someone standing outside of the car? Yes, this idea is called a reference frame. What does this have to do with planets? When we look up at the moon, we see only one side. To us, we think the moon is perfectly still. This is not true. For a person standing on another part of the earth, their moon will look different then our moon. The only way we would be able to see movement of moon is if we were to stand on something other than the earth, such as the sun. Then, we would be able to see the moon move. Mr. Finley then told us more vocabulary.
Heliocentric model- Everything rotates around the sun
Geocentric model- Everything rotates around the earth
As you should know, we follow the heliocentric model. Scientists and astronomers have proven that the earth, and any other planets rotate around a sun. Then Mr. Finley told us to write a long paragraph explaining why people in history used to follow a geocentric model versus our heliocentric model? This is what we had for homework that night.
ZK
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