Astronomy Follow-up
Lesson: The Universe and Planetary Motion
Part 1: Questions from the Lesson
(1) What keeps planets and moons in their orbits? ___________________________________________________________________________
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(2) How old is our solar system? ___________________________________________________________________________
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(3) Use the nebular hypothesis to explain why the planets all orbit the Sun in the same direction.
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(4) Name each of the planets in the solar system in order starting at the Sun.
Part 2: Watch this video of the Universe on Youtube—be sure to use headphones if you’re listening in the classroom, and answer the following questions.
(5) How far is the Earth from the Sun?
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(6) How long does it take you to reach the edge of the Solar System? How far did you travel?
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(7) What is the closest star to our solar system? How far is it from our solar system?
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(8) Draw a sketch of our galaxy and label where we are here:
(9) What is the local group and how many galaxies are in it?
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(10) As you come to the end of the journey, how long did you travel to reach “the edge” of the Universe?
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