Solar System Flashcards 1. Rotate 2. Axis 3. Revolve 4. Orbit 5. What is the cycle of day and night caused by? 6. How long does it take for Earth to revolve around the Sun? 7. What causes Earth’s seasons? 8. How does the Moon differ from the Earth? 9. Why can we see the Moon at night? 10. Crater 11. Be able to identify a new moon, crescent moon, gibbous moon, or full moon from picture. 12. How long does the Moon take to revolve around the Earth? 13. How much of the Moon’s surface is always lit by the Sun’s rays? 14. What were the famous words uttered by Neil Armstrong? 15. Why do we see only one side of the Moon? 16. Why is the Moon unlivable? 17. What is an AU? 18. Which planet is the biggest? Smallest? 19. Be able to answer questions from a chart similar to the ones on p. C83 and p. C85. 20. Name the terrestrial planets and the gas giants. 21. How can you tell if one crater is older than another in overlapping craters? 22. In order to be considered a planet, what characteristics must an object in space have? 23. Why is a moon different than a planet? 24. What kinds of satellites are in the solar system? 25. Rewatch the video about the Sun and reread the article (found on the SOS4 Wiki) to write a paragraph (4-6 sentences) about what you learned about the Sun.