1) How is gravity different on Earth than it is on the moon?  a) Gravity isn't as strong on the moon.   b) There is no gravity on the moon.   c) There is no gravity on Earth. d) Gravity isn't as strong on Earth. 2) What happens to astronauts when they aren't near a planet or the moon?  a) They don't feel as much of the gravity. b) They feel gravity pulling toward Earth.  c) They don't feel the effects of gravity. d) They feel gravity pulling them toward the closest planet. 3) What does the photograph and caption on page 68 elp the reader understand? a) That astronauts have a lot of without gravity. b) That it's easier to do a lot of things without gravity. c) That astronauts enjoy flipping an doing cartwheels in space. d) That you can flip without falling because there isn't gravity. 4) Why isn't the astronaut on page 67 not carrying a tank of air?  a) He is inside the spaceship, where oxygen is being pumped.  b)  He is close enough to Earth to have oxygen. c) He is inside the spaceship and hasn't used up his supply of oxygen. d) He is holding his breath until he can get his tank of air. 5) What other effect does the lack of air have on space?  a) There is not gravity. b) You can't hear any sounds. c) Your food floats. d) It is very cold.

Unit 7-Chapter 10

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