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Basics of Physics: Exploring Gravity QUIZ 1. Gravity is best described as the attractive force _____. A) that does not exist in space B) that acts between any two objects C) that acts between magnets and iron D) that does not affect orbiting satellites 2. The greater the mass of an object, the greater its force due to gravity. A) true B) false 3. An object will weigh more on _____. A) Mars B) Earth C) Jupiter D) the moon 4. The mass of an object on Earth _____ the mass of the same object on the moon. A) is less than C) is greater than B) is the same as D) is almost equal to 5. If a feather and a hammer fell to the ground from the same height in a vacuum, _____. A) the feather would land first C) they would land at the same time B) the hammer would land first D) they would both float in the vacuum 6. What is the acceleration due to gravity if an object falls from a height of 25 m? A) 25.0 m/s2 C) 250 m/s2 B) 9.81 m/s2 D) 98.0 m/s2 7. Under zero G conditions, such as in an orbiting satellite, a person seems _____. A) mass-less C) heavier than on earth B) weightless D) the same weight as on earth 8. The force of gravity between two objects depends on _____. A) the masses of the objects only B) the masses of the objects and the speeds they are traveling C) the masses of the objects and their distance from one another D) the masses of the objects and the accelerations of the two objects 9. What keeps the planets orbiting around the Sun? A) inertia C) the heat from the sun B) gravity D) the weightless environment 10. Einstein explained gravity as the idea that large masses can _____. A) create comets B) create black holes C) pull apart galaxies D) warp the space around them Basics of Physics: Exploring Gravity QUIZ KEY 1. Gravity is best described as the attractive force _____. A) that does not exist in space B) that acts between any two objects C) that acts between magnets and iron D) that does not affect orbiting satellites 2. The greater the mass of an object, the greater its force due to gravity. A) true B) false 3. An object will weigh more on _____. A) Mars B) Earth C) Jupiter D) the moon 4. The mass of an object on Earth _____ the mass of the same object on the moon. A) is less than C) is greater than B) is the same as D) is almost equal to 5. If a feather and a hammer fell to the ground from the same height in a vacuum, _____. A) the feather would land first C) they would land at the same time B) the hammer would land first D) they would both float in the vacuum 6. What is the acceleration due to gravity if an object falls from a height of 25 m? A) 25.0 m/s2 C) 250 m/s2 B) 9.81 m/s2 D) 98.0 m/s2 7. Under zero G conditions, such as in an orbiting satellite, a person seems _____. A) mass-less C) heavier than on earth B) weightless D) the same weight as on earth 8. The force of gravity between two objects depends on _____. A) the masses of the objects only B) the masses of the objects and the speeds they are traveling C) the masses of the objects and their distance from one another D) the masses of the objects and the accelerations of the two objects 9. What keeps the planets orbiting around the Sun? A) inertia C) the heat from the sun B) gravity D) the weightless environment 10. Einstein explained gravity as the idea that large masses can _____. A) create comets B) create black holes C) pull apart galaxies D) warp the space around them
