1) An imaginary line that passes through a planet’s center and its north and south poles, about which the planet rotates. a) Axis b) Orbit c) Phase 2) The spinning motion of a planet on its axis. a) Revolution b) Rotation c) Eclipse 3) The movement of an object around another object. a) Revolution b) Inertia c) Solstice 4) The path of an object as it revolves around another object in space. a) Orbit b) Tide c) Umbra 5) Either of the two days of the year on which the sun reaches its greatest distance from the equator. a) Equinox b) Solstice c) Gravity 6) Either of the two days of the year on which neither hemisphere is tilted toward or away from the sun. a) Equinox b) Phase c) Penumbra 7) The attractive force between objects; the force that moves objects downhill. a) Gravity b) Inertia c) Spring tide 8) The scientific law that states that every object in the universe attracts every other object. a) Law of Universal Gravitation b) Neap tide c) Axis 9) The tendency of an object to resist a change in motion. a) Inertia b) Orbit c) Eclipse 10) One of the different shapes of the moon as seen from Earth. a) Phase b) Solstice c) Revolution 11) The partial or total blocking of one object in space by another. a) Eclipse b) Tide c) Penumbra 12) The darkest part of a shadow. a) Umbra b) Equinox c) Gravity 13) The part of a shadow surrounding the darkest part. a) Penumbra b) Phase c) Inertia 14) The periodic rise and fall of the level of water in the ocean. a) Tide b) Spring tide c) Orbit 15) The tide with the greatest difference between consecutive low and high tides. a) Neap tide b) Spring tide c) Axis 16) The tide with the least difference between consecutive low and high tides. a) Neap tide b) Rotation c) Eclipse

Astronomy Vocabulary Quiz

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