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Terms in this set (27)
The study of the moon, stars, and other objects in space
The imaginary line that passes through Earth's center and the North and South poles
The spinning of Earth on its axis
the movement of one object around another
An object's revolves around another object in space
Each of the days when the sun is farthest north or south of the equator
When the sun shines directly on the equator and the earth is not tilted toward nor away from the sun; means "equal night."
a push or a pull
force that attracts all objects toward each other
law of universal gravitation
law that states that every object in the universe attracts every other object.
the amount of matter in an object.
The force of gravity on an object
The tendency of an object to resist a change in motion
Newton's first law of motion
law that says that an object at rest will stay at rest and an object in motion will stay in motion with a constant speed and direction unless acted on by a force.
a tide with the least difference between consecutive low and high tides
the dark, cone-shaped shadow caused by an eclipse
When an object in space comes between the sun and a third object, it casts a shadow on that object
occurs when a new moon blocks your view of the sun
The different shapes of the moon you see from Earth
The larger, dimmer part of the shadow from an eclipse
occurs at a full moon when Earth is directly between the moon and the sun, casting a shadow on the moon
the rise and fall of ocean water that occurs every 12.5 hours or so.
Their greatest difference between consecutive low and high tides
a device built to observe distant objects by making them appear closer.
dark, flatlands on the moon; the Latin word for "seas.
large round pits caused by meteoroids crashing into a planet or moon
chunks of rock or dust from space.
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