Space Flashcards

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1
Q

Solar system

A

The sun and its family of orbiting Planets, moon, and other objects.

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2
Q

Galaxy

A

Millions or billions of stars held together in a group by their own gravity.

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3
Q

Universe

A

Space and all the matter and energy in it

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4
Q

Satellite

A

An object that orbits a more massive object

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5
Q

Impact crater

A

A round pit left behind on the surface of a Planet

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6
Q

Axis of rotation

A

An imaginary line in which a turning body, such as earths rotates

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7
Q

Revolution

A

The motion of one body around another, suck as earth in its orbit around the sun.

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8
Q

Season

A

On part of a pattern of temperature changes and other weather trends over the Course of a year.

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9
Q

Equinox

A

a time of year when daylight and darkness are nearly equal for most of earth.

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10
Q

Orbit

A

The path of an object in space as it moves around another object due to gravity.

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11
Q

Solstice

A

The time of year when days are either longest or shortest.

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12
Q

Mare

A

A large dark plain solidified lava on the moon

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13
Q

Eclipse

A

An event during which one object in space casts a shadow onto another.

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14
Q

Umbra

A

The dark ,central region of a shadow ,such as the cone of complete shadow cast by an object.

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15
Q

Penumbra

A

A region of lighter shadow that may surround an umbra

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16
Q

Astronomical unit

A

Earths average distance from the sun.

17
Q

Ellipse

A

On oval

18
Q

Terrestrial planet

A

Earth or a planet similar to earth with a rocky surface.

19
Q

Gas giant

A

A large planet that consists most of gases

20
Q

Asteroid

A

A small soiled,rocky body that orbits the sun.

21
Q

Comet

A

A body that produces a coma of gas and dust

22
Q

Meteor

A

A brief streak of light produced by a small particle.

23
Q

Meteorite

A

A small object from outer space that passes through earths atmosphere.