Our Solar System

Our solar system is:

• the objects the Earth revolves around

• the objects the Sun revolves around

• the Sun and the objects that orbit it

• the Earth and the objects that orbit it

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Why is the Sun at the center of our solar system?

• It's the smallest body with the most mass and gravity.

• It's the largest body with the most mass and gravity.

• It's the largest body with the smallest mass and gravity.

• It's the smallest body with the least mass and gravity.

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NGSS.MS-ESS1-2

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Why is the Sun classified as a star?

• It's a big ball of gas.
• It's held together by gravity.
• It undergoes nuclear fusion.
• It clears its neighborhood.

How many other stars besides our Sun are in our solar system?

• Too many to count
• Trillions
• Billions
• None (zero)

What force holds our solar system together?

• friction
• gravity
• air resistance
• normal

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How do planets differ from dwarf planets?

• Dwarf planets are larger.
• Planets are smaller.
• Dwarf planets have a nearly round shape.
• Planets clear their neighborhood.

Why don't dwarf planets clear their neighborhood?

• They're too big with too much gravity.
• They're too big with not enough gravity.
• They're too small with too much gravity.
• They're too small with not enough gravity.

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What is the correct order of the planets?

• Mercury, Venus, Earth, Jupiter, Mars, Saturn, Neptune, Uranus

• Mercury, Venus, Earth, Mars, Uranus, Neptune, Jupiter, Saturn

• Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune

• Mars, Venus, Earth, Mercury, Jupiter, Saturn, Uranus, Neptune

What separates the inner planets from the outer planets?

• the Kuiper Belt
• the asteroid belt
• the Oort Cloud
• the Sun

Where is the asteroid belt located?

• between Mars and Jupiter
• between Earth and Mars
• between Mercury and Venus
• beyond Neptune