1) The force that causes objects with mass to attract to each other. a) gravity b) air c) mass 2) A push or pull that causes an object to move, stop, or change direction. a) mass b) air c) force 3) Name of the British physicist that discovered the force of gravity. a) Albert Einstein b) Sir Isaac Newton c) Martin Luther King Jr. 4) The amount of matter that makes an object. a) mass b) gravity c) energy 5) How heavy something is; how much gravity pulls on an object. a) energy b) atmosphere c) weight 6) Push or pull an object a) force b) gravity c) moon 7) An object in movement will keep moving, an object will remain at rest unless an outside force changes its motion. a) 3rd Law of Newton b) 1st Law of Newton c) 2nd Law of Newton 8) According to popular legend, how did Sir Isaac Newton discover gravity? a) by making an apple pie with his grandmother. b) by observing an apple fall from a tree. c) By observing how an apple tree grew.. 9) Which object is NOT affected by Earth's gravity? a) rainbow b) oceans c) clouds 10) Which object is NOT affected by Earth's gravity? a) fruits b) people c) planets 11) Which object is NOT affected by Earth's gravity? a) plants b) animals c) light 12) Which object IT IS affected by Earth's gravity? a) the Sun b) airplane c) heat 13) Which object IT IS affected by Earth's gravity? a) drone b) light c) Jupiter 14) Which object IT IS affected by Earth's gravity? a) light b) rainbow c) fireworks 15) Gravity is a force that pulls objects to the ground. a) false b) true c) maybe 16) Which celestial body has more gravity? a) Earth b) moon c) none 17) If a planet has more mass, your weight would be _______ than on Earth. a) less b) more c) same 18) A boy's gravitational pull attracts the Earth towards him. a) true b) false c) maybe 19) Gravity is a force that pushes things apart. a) false b) true c) sometimes 20) Earth’s gravity is stronger than the moon’s. a) false b) sometimes c) true

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