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8th Topic 1 Lesson 2
8th Topic 1 Lesson 2 Vocabulary
Question | Answer |
---|---|
Axis | an imaginary line that passes from the North Pole, through the Earth’s center, to the South Pole |
Rotation | the spinning of the Earth on its axis |
Revolution | the movement of one object around another |
Orbit | an objects path around another object |
Solstice | in each hemisphere, there is one day per year when the sun appears highest in the sky. (Occurs in both the Northern and Southern hemispheres) |
Equinox | – halfway between the solstices, neither hemisphere is tilted toward the sun. (means equal night) |
Gravity | force that attracts all objects toward each other |
Law of Universal Gravitation | states that every object in the universe attracts every other object |
Inertia | the tendency of an object to resist change in motion |
Hypothesize | to make an educated guess of what will happen |