Astronomy 101

Discover solar system models and Earth's movements with Astronomy 101!

Geocentric vs. Heliocentric Models Watch the video and then answer the questions below.On your NEXT CLEAN PAGE, TITLE IT, "Astronomy 101" and TAKE NOTES about what each model IS (definition in your own words) and WHO proposed the idea. Match the proper word with the description. Geocentric Earth is at the center of our solar system Heliocentric The sun in at the center of our solar system Geo- Earth Helio- Sun -centric center Sort the descriptions to the proper model of the solar system! Heliocentric Model Copernicus proposed this idea the sun is at the center planets revolve around the sun earth revolves around the sun the correct model of the solar system Geocentric Model Aristotle proposed this idea the Earth is at the center planets revolve around the Earth the sun revolves around the Earth 1st but wrong model of the solar system What shape is the orbit of each planet around the sun? WRITE THIS IN YOUR NOTES: The planets revolve around the sun in an ELLIPTICAL orbit (path)."elliptical" means, "oval-shaped" kind of like an egg. What shape is the orbit of each planet around the sun? Select all that apply. circular oval-shaped square egg-shaped Rotation vs Revolution! STOP! BEFORE YOUR START THE VIDEO, READ BELOW:On the same page as your earlier notes, write down these questions and answer them as you watch the video:1. What is rotation?2. Does the Earth rotate straight up and down? Explain.3. How long does it take for Earth to rotate?4. What does the rotation of Earth cause to change daily depending on where you are on Earth?5. What is revolution?6. What does the Earth revolve around?7. How long does it take for Earth to revolve? Sort the descriptions into the proper group. Rotation spins on axis 24 hrs to complete day vs night spinning Revolution moves around the sun 365 days to complete determines year + seasons orbiting