1. Earth rotates in about _______ hours. 12 26 6 24

2. Who formulated the geocentric theory? Newton Copernicus Ptolemy Galileo

3. Who formulated the heliocentric theory? Ptolemy Copernicus Galileo Kepler

4. What is the axial tilt of the Earth? 24.5 degrees 17.5 degrees 12.7 degrees 23.5 degrees

5. The Earth diameter is _________ kilometers? 7,904 12,756 6,542 9,655

6. Earth has how many natural satellites? One Two None Four

7. What was the giant land mass called that existed some 200 million years ago? Giant land mass Triassic Cambrian Pangaea

8. The Earth has how many continents? Six Seven One Eight

9. Earth is the densest of all of the Sun's planets. True False

10. The Earth's average distance is ______________ kilometers from the Sun. 93,000,000 149,597,000 9,300,000 1,495,970,000

11. The Earth is the ___________ planet from the Sun. fifth fourth third second

12. The Earth is a _________________ planet. gas giant terrestrial jovian asteroid

13. Earth's atmosphere consists mostly of? Carbon dioxide and argon Oxygen and hydrogen Hydrogen and helium Oxygen and nitrogen

14. When the Earth is directly between the Sun and the Moon it is called a _________ eclipse. Inferior conjunction Solar Lunar Transit

15. Earth is moving around the Sun at about __________ miles per hour? 24,000 109,600 12,000 67,000

16. Earth's inner core is solid. True False

17. The largest known impact crater on the Earth is the _________________. Vredefort Ring Clearwater Lakes craters Barringer Crater Caloris basin

18. The highest mountain on the Earth is ________________. Everest McKinley K2 Mauna Kea

19. What is the second highest mountain on the Earth? McKinley K2 Everest Mauna Kea

20. The deepest depression on the Earth is the _______________. Puerto Rico trench Eurasia basin Java trench Marianas trench