1. 8 th Grade Astronomy in Review Take this quiz and look at your score. Reflect. Take the quiz again as may times as you need to in order to feel good about your understanding of these concepts. Remember that your attitude can determine altitude. You CAN do it!!!

2. Earth in the Solar System: Galaxies 1. A huge group of stars, dust and gas bound together by gravity is a 2. Most elliptical galaxies have only 3. Where is our sun located in the Milky Way?

3. Earth in the Solar System: Stars 4. The sun produces energy through 5. When you look at the sun you are seeing the 6. On the surface of the sun, what often link different parts of sunspot regions? 7. Every star begins its life as a 8. A star is born when a protostar becomes so dense and hot that 9. What produces the energy that caused stars to shine? 10. You can see the moon at night because 11. A solar eclipse can occur

4. Earth in the Solar System: Measurement 12. An astronomical unit is 13. A light-year is 14. The Milky Way is about 100,000 light- years wide. To cross the Milky Way, light takes about

5. Earth in the Solar System: Planets and Natural Satellites 15. A natural satellite that revolves around a planet is called a(an) 16. The four inner planets all have 17. Which planet has polar ice caps containing frozen water and carbon dioxide? 18. Which is the largest planet in the solar system? 19. What is the composition of the four planets closest the sun? 20. An object that’s composed mainly of ice and is orbiting the sun in an elliptical path is most likely