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Gravity
Multiple Choice
Identify the choice that best completes the statement or answers the question.
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1. Other galaxies were first believed to be ____.
a. nebulae or star clusters within the Milky Way
b. quasars outside the Milky Way
c. constellations within the Milky Way
d. the Andromeda galaxy
2. Recent observations show that the rate of expansion of the universe is ____.
a. slowing down
c. constantly changing
b. stabilizing
d. speeding up
3. A flat universe was first predicted in the 1980’s by the ____.
a. Big Bang theory
c. inflationary universe model
b. steady-state theory
d. flat universe model
4. The spiral shape of the Milky Way Galaxy CANNOT be seen from Earth because ______.
a. we are located above the galaxy
c. our view is blocked by the sun
b. we are located within one of its spiral
d. none of the above
arms
5. What best describes gravity ?
a. keeps things moving
c. force that pushes matter apart
b. force of attraction
d. electrical energy
6. What best describes why planets are spherical in shape?
a. no air
c. gravity of the Sun
b. gravity of the planet
d. no one knows
7. What is believed to be the original material that made the planets?
a. from Nebular material
c. from other planets
b. the planets have always been there
d. no why to know
8. What is the imaginary line between the Sun and a planet that sweeps out in equal amounts of area in equal
amounts of time?
a. Kepler’s first law
c. Law of universal gravitation
b. Phantasmal
d. Kepler’s second law
9. The statement that describes the relationship among the masses of two bodies and the force and distance between
them?
a. Law of conservation of mass
c. Law of universal gravitation
b. Law of conservation of energy
d. Kepler’s laws
10. Arrange these in order of increasing mass: Jupiter, Earth, the Sun, an asteroid.
a. Jupiter, Earth, the Sun, an asteroid
c. Earth, Jupiter, the Sun, an asteroid.
b. an asteroid, Earth, Jupiter, the Sun
d. an asteroid, Earth, Jupiter, the Sun,
____ 11. What force is responsible for keeping us on Earth?
a. Newton’s
c. Rotation
b. Gravity
d. Revolution
____ 12. As the mass of an object increases, the gravitational force it can exert on another body ________.
a. decreases
c. remains the same
b. increases
____ 13. What materials have gravitational pull?
a. Nothing
c. All matter has gravity
b. Only the Earth
d. Everything has gravitational push
____ 14. Why does an object weight less on the Moon?
a. It has less mass on the Moon
c. The force of gravity is less on the
Moon
b. here is no atmosphere on the Moon
d. The force of gravity is more on the
Moon
____ 15. The pull of gravity between to objects depends on what?
a. Mass of objects
c. Volume of the objects
b. The speed that they are moving
d. None of the above
____ 16. The force of gravity between two objects will increase if __________.
a. the distance between the objects increases c. no change in distance
b. the distance between the objects decreases d. all of the above
Gravity
Answer Section
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