12. True or False: The more massive a star is at "birth," the longer its life.
13. What causes high and low tides?
14 Give length of time for the following:
Rotation of the earth on its axis
Revolution of the moon around the earth
Revolution of the earth around the sun
The tilt of the earth on its axis, combined with the revolution of the earth around the sun
15. What scientist is credited with developing the continental drift theory?
16. Type of fault in which blocks of crust move horizontally past each other.
17. Which type of volcano is built of alternating layers of lava flow, ash, and cinders?
18. Name the three main components of soil.
19. Define/describe minerals and give several examples of common ones.
20. Following an earthquake, seismic waves begin to move out from the point of the movement. The type of wave that travels out in “all†directions from the point of movement is the __________.
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