1) Gravity is a force that pulls objects __________ a) upward b) downward c) to the side 2) What keeps us from floating into space? a) air b) light c) gravity 3) The force of gravity on an object is called its __________. a) size b) weight c) color 4) The planet with the strongest gravity is __________ a) Earth b) Jupiter c) mars 5) Who discovered gravity when an apple fell from a tree? a) Albert Einstein b) Isaac Newton c) Thomas Edison

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