Twenty Questions About Earth

15 Points Per Correct Answer - No time limit  

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

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

3. Who formulated the first heliocentric theory that was accepted by other scientists soon after its publication? Kepler Ptolemy Copernicus Galileo

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

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

6. Earth has how many natural satellites visible to the naked eye? None Four Two One

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

8. According to the conventional definition of "continent" used by "National Geographic" magazine, the Earth has seven continents. True False

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. fourth fifth second third

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

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

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 _________________. Barringer Crater Caloris basin Clearwater Lakes craters Vredefort Ring

18. The highest mountain on the Earth, measured conventionally from sea level, is ________________. Mauna Kea K2 Everest McKinley

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

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