Solar system vocab Flashcards

1
Q

Meteor

A

The light we see when a space rock burns in the atmosphere

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2
Q

Meteorite

A

A space rock that hits earth

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3
Q

Meteoroid

A

A chunk of rock or metal in space

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4
Q

Asteroid

A

One of the rocky objects revolving around the sun that is too small and numerous to be considered a planet

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5
Q

Comet

A

A loose collection of ice and dust that orbits the sun, typically in a long, narrow orbit

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6
Q

Dwarf planet

A

A body in space that orbits the sun, is massive enough to almost be round but not so massive that its orbit does not cross any other objects. It is not a moon of another planet

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7
Q

Gravity

A

The attractive force between objects; the force that moves objects downhill

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8
Q

Inertia

A

The tendency of an object to resist a change in motion

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9
Q

Inner planets

A

The four inner planets (Mercury, Venus, Earth, Mars) have slower orbits (period of revolution = year) , slower spin (period of rotation = days) , no rings , and they are made of rock and metal with a solid outer surface

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10
Q

Moon

A

A natural satellite that orbits a planet

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11
Q

Outer planet

A

Four massive (Jupiter, Saturn, Uranus, and Neptune) in the solar system that are primarily made of gas, have rings, rotate quickly and orbit slowly

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12
Q

Sun

A

The massive sized star at the center of our solar system around which the 8 planets orbit

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13
Q

Telescope

A

An optical instrument that forms enlarged images of distant objects

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