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Questions and Answers
Which of the following is true about Earth's magnetic field?
Which of the following is true about Earth's magnetic field?
- It is caused by the molten nickel-iron core of the Earth. (correct)
- It is found only on Earth and not on any other planet.
- It is a result of the harmful radiation from the Sun.
- It is generated by the atmosphere of the Earth.
What makes Earth a unique planet?
What makes Earth a unique planet?
- It is the only planet in the solar system with a magnetic field.
- It has liquid water, plate tectonics, and an atmosphere that shields it from the Sun's rays. (correct)
- It is the only planet in the known universe confirmed to host life.
- It has the largest amount of liquid water in the solar system.
What percentage of Earth's surface is covered by liquid water?
What percentage of Earth's surface is covered by liquid water?
- 30%
- 50%
- 90%
- 70% (correct)
What is the main function of Earth's atmosphere?
What is the main function of Earth's atmosphere?
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Which of the following is not a reason why Earth is a habitable planet?
Which of the following is not a reason why Earth is a habitable planet?
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