Astronomy Flashcards

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1
Q

respectively list the planets from the sun

A

mercury, Venus, earth, mars, Jupiter, Saturn, Uranus, Neptune

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2
Q

what are asteroids made of?

A

Nickle and Iron

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3
Q

What is beyond Neptune?

A

The Oort Cloud, which is a space filled with comets

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4
Q

what are comets

A

giant bodies made of ice and dust

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5
Q

Inner/Terrestrial planets (include properties)

A

4 planets between the sun and the asteroid belt, solid rocky surfaces, thin atmospheres, few or no moons, no rings

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6
Q

outer planets (include properties)

A

4 planets after Mars, made of liquids and gases, have many moons and rings, much colder and bigger than terrestrial planets,

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7
Q

how was the solar system formed?

A

an interstellar cloud was drawn together due to gravity, forming planets, moons, and a star

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8
Q

what is an astronomical unit (AU)

A

the distance from the sun to the Earth which is 150million km.

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9
Q

How many AUs is Jupiter from the Sun

A

5

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10
Q

How far is Saturn from the Sun

A

9AU

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11
Q

solar wind of sun

A

supper high energy protons and electrons that are ejected from the sun

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12
Q

interstellar space

A

the point at which the materials and magnetic field from the sun stop affecting matter

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13
Q

interstellar wind

A

inward pressure from the gas in the Local Interstellar Cloud

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