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10 Cards in this Set

  • Front
  • Back
How long does it take for the earth's rotation?
24 hours
How long does one revolution of the earth around the sun take?
1 year or 365.25 days
How does a solar eclipse occur?
the moon must be directly between the earth and sun
When are tides the highest?
When the sun, earth, and moon are nearly in a line
What force are all objects attracted to each other by?
gravity
What are the 2 factors that combine to keep earth and the moon in their orbits?
gravity and inertia
What is the tendency of a moving object to continue moving in a straight line or a stationary object to remain in place called?
inertia
Why can the moon be seen from earth?
sunlight reflects off the moon's surface
What are the round pits on the moon called?
craters
What are the 4 seasons?
autumn (fall)
winter
spring
summer