Astronomy: The Planet Earth

1. What makes planet earth different from the other planets in the solar system?

• A. It supports life.

• B. It is mostly covered in water.

• C. The atmosphere holds gases.

• D. All of the above

2. Planet Earth is uniquely different from other planets because __________.

• A. It has people that live in it.

• B. It has soil where trees grow.

• C. It has trees that provide oxygen.

• D. It has liquid water in the surface.

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3. What makes planet Earth habitable?

• A. It has comfortable distance from the sun.

• B. The atmosphere serves as shields from the sun.

• C. Only A

• D. Both A and B

4. Why is Earth called the “living planet?”

• A. It has life mechanism.

• B. It has water and atmosphere.

• C. It has carbon dioxide in the atmosphere.

• D. It has atmosphere that supports oxygen.

5. Which must be provided for an organism to survive in planet Earth?

• A. right amount of sunlight and atmosphere

• B. right amount of water and carbon

• C. Only A

• D. Both A and B

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6. Planet Earth is considered as “blue planet.” Which of the following best

describes the surface of planet Earth?

• A. Earth has atmosphere.

• B. Earth has lots of volcano.

• C. Earth is covered with red dust.

• D. Earth has mostly water on the surface.

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7. What is the reason why Earth is different from other planets in the solar

system?

• A. Earth is mostly covered in water.

• B. Earth has comfortable distance from the sun.

• C. Earth has carbon dioxide on its atmosphere.

• D. It has approximately same size as that of Venus.

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8. Which of the following best describes planet Earth?

• A. It has gases.

• B. It supports life.

• C. It has rocky core.

• D. It supports other planet.

9. It was found out that Earth’s surface is covered with water. Approximately, how many percent of water comprises the Earth?

• A. 45% water

• B. 50% water

• C. 60% water

• D. 70% water

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10. In order for an organism to survive, nutrients are needed. What are the nutrients that planet Earth can offer for an organism to exist?

• A. Earth has an atmosphere and ozone layer.

• B. Earth has both water cycle and nitrogen cycle.

• C. Earth has natural activities to circulate nutrients.

• D. All of the above

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