The Solar System Quiz

Which planet can be found in the habitable zone?

• Mercury
• Saturn
• Earth
• Uranus

______ contains 99.8% of the mass in our solar system.

• Jupiter
• The Sun
• Saturn
• Venus

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Which planet is closest to the sun?

• Earth
• Mars
• Neptune
• Mercury

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Which of the following is an example of a dwarf planet?

• Pluto
• Mercury
• Mars
• Neptune

How many stars are in our solar system?

• 1
• 1,000
• 1 million
• Over 1 billion

How long does it take Earth to orbit the sun?

• one week
• one month
• one year

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What causes sunrise and sunset?

• Earth orbits.
• Earth rotates.
• The sun moves around Earth.

This graph shows how long a day is on some planets.  Which planet has a longer day than Earth?

• Mars
• Neptune
• Uranus

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Earth and the other planets closest to the Sun are made mostly of _______

• gas
• metal
• water
• rock

One full orbit of an object around another object is called a ________.

• axis
• rotation
• revolution
• satellite

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