Let's see how you did.

1. Which planet is Earth from the Sun?
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2. How far is Earth from the Sun?
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3. Earth is approximately how old?
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4. What is the diameter of Earth?
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5. Earth's atmosphere is mostly made up of which gas?
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6. What percentage of Earth's surface is covered in water?
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7. What creates the magnetic field that surrounds the Earth?
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8. When did the first simple animals begin to appear on Earth?
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9. Approximately how long have modern humans existed on Earth?
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10. What is the average distance of the moon from Earth?
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Terrible! You scored 0 out of 10.

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