1.) When the moon is waning, the sunlit area is said to be getting smaller.
A
True
B
False
2.) Just as Earth moves around the sun, the moon revolves around Earth. About how many Earth days does it take for the moon to travel around Earth?
A
about 7 days
B
about 365 days
C
about 180 days
D
about 28 days
3.) A satellite is an object that revolves around a larger object. Many satellites are orbiting Earth. Which of the following is an important factor in keeping a communications satellite in orbit around Earth?
A
gravity
B
light
C
heat
D
magnetism
