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Earth-Sun-Moon
Topic 11: Lesson 2 Earth's Movement in Space
Question | Answer |
---|---|
An imaginary line that passes through a planet's center and its north and south poles, about which the planet rotates. | axis |
The spinning motion of a planet on its axis. | rotation |
The movement of an object around another object. | revolution |
The path of an object as it revolves around another object in space. | orbit |
Either of the two days of the year on which the sun reaches its greatest distance north or south of the equator. | solstice |
Either of the two days of the year on which neither hemisphere is tilted toward or away from the sun. | equinox |
The attractive force between objects; the force that moves objects downhill. | gravity |
The scientific law that states that every object in the universe attracts every other object. | law of universal gravitation |
The tendency of an object to resist a change in motion. | inertia |
To give a possible but not yet proven explanation for something. | hypothesize |