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32 Cards in this Set
- Front
- Back
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axis
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The imaginary line that passes through earths center and the North and South poles
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rotation
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The spinning of earth on its axis.
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revolution
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the moving of one object around another.
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orbit
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the path that Earth takes as it revolves around the sun.
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law of universal gravitation
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states that every object in the universe attracts every other object.
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inertia
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the tendency of an object to resist a change in motion.
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Newton's first law of motion
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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.
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phases
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The different shapes of the moon you see from Earth.
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eclipse
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When an object in space comes between the sun and a third object, it casts a shadow on that object
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solar eclipse
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occurs when a new moon blocks your view of the sun.
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umbra
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the very darkest part of the moon's shadow.
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penumba
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The larger part of the shadow
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lunar eclipse
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occurs at a full moon when Earth is directly between the moon and the sun.
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maria
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The moon's dark surface and flat areas
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meteoroids
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a chunk of rock or dust from space.
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orbitical veloocity
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the velocity a rocket must achieve to establish an orbit around earth.
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escape velocity
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the velocity a rocket must reach to fly beyond a planet's gravitational pull.
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satellite
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an object that revolves around another object in space.
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space shuttle
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a space craft that can carry a crew into space
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space station
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a large artificial satellite on which people can live and work for long periods.
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axis
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The imaginary line that passes through earths center and the North and South poles
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rotation
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The spinning of earth on its axis.
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revolution
|
the moving of one object around another.
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orbit
|
the path that Earth takes as it revolves around the sun.
|
|
|
law of universal gravitation
|
states that every object in the universe attracts every other object.
|
|
|
inertia
|
the tendency of an object to resist a change in motion.
|
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Newton's first law of motion
|
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.
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phases
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The different shapes of the moon you see from Earth.
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eclipse
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When an object in space comes between the sun and a third object, it casts a shadow on that object
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solar eclipse
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occurs when a new moon blocks your view of the sun.
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space probe
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a spacecraft that carries scientific instruments that can collect data, but has no human crew.
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rover
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small robots that are parts of probes.
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