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Prentice Hall Science explorer Earth Science ch. 19 vocabulary
vocabulary for chapter 19
Terms in this set (24)
The study of the moon, star, and other objects in space
An imaginary line that passes through Earth's center and the North and south poles about which Earth rotates on.
The spinning movment of a planet on its axis
The movement of an object around another object
The path of an object as it revolves around another in space.
The two days of the year on which the sun reaches its greatest distance north or south of equator.
The two days the year on which niether hemisphere is tilted toward or away from the sun.
A push or a pull exerted on an object
The attractive force between objects; its strength depends on their masses and the distance between them.
law of universal gravitation
The scientific law states that every object in the universe attracts every other object.
The amount of matter in an object.
Measurement of the force of gravity on an object.
The tendency of an object to resist a change in motion.
Newton's first law of motion
The scientific law that states that an object at rest will stay at rest and an object in motion will stay in motion with a constent speed and direction unless acted on by a force.
One of the different apparent shapes of moon as seen from Earth.
The partial or total blocking of one object in space space by another.
The blocking of sunlight to Earth that occurs when the moon is directly between the sun and Earth.
The darkest part of a shadow.
The part of a shadow surrounding the darkest part.
The blocking of sunlight to the moon that occurs when Earth is directly between the sun and moon.
The periodic rise and fall of the leval of water in oceans.
The tide with the greatest difference between consecutive low and high tides.
The tides with the least difference between consecutive.
Dark, flat areas on the moon formed from huge ancient lava flows.
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