lession 2 since test Flashcards

study

1
Q

how was the solar system made and when

A

made 4.6 billions years ago clouds of gas and dust cupped to gather by gravity into a small dense and spun and became the sun

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2
Q

how were planet made.

A

leftover gas and dust created planets

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3
Q

define planets

A

orbits the sun and is massive enough to be nearly spherical in shape and has no other object in its path

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3
Q

define dwarf planets

A

orbits the sun and is massive enough to be nearly spherical in shape but shares its path

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3
Q

define asteroid

A

small rocky that orbit the sun b/w the orbit of mars and

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3
Q

define comets

A

small rocky that orbit the sun

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4
Q

define meteoroids

A

small rock particles that move throughout space

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5
Q

define meteor

A

when meteoroids get into Earth’s atmosphere.

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6
Q

Mercury

A

.39 AU from the sun

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7
Q

Venus

A

.72 AU from earth hottest planet

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8
Q

Earth

A

1 AU from sun

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9
Q

Mars

A

half the size of earth 1.5 AU from sun

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10
Q

Jupiter

A

5 AU from sun

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11
Q

Saturn

A

2nd largest planet 9.5 AU from sun

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12
Q

Uranus

A

20 AU from sun

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13
Q

Neptune

A

30 AU from sun