3,408

pages

Earth/Quiz

Sign in to edit

Questions[ ]

1. Why is Earth's nickname "the blue planet?"

A) Because 70% of it is covered in water
B) Because its clouds appear blue from space
C) Because snow-peaked mountains appear blue from space
D) Because its sky is blue

Correct Answer: Because 70% of it is covered in water

2. What keeps Earth's temperature at the proper level for life?

A) Its polar ice caps
B) Its distance from the Sun
C) Its metallic core
D) Its magnetic field

Correct Answer: Its distance from the Sun

3. What is the relationship between carbon and life on earth?

A) The first living creatures consisted of individual carbon atoms
B) All life on Earth ingests carbon
C) All life on Earth breathes in carbon dioxide
D) All life on Earth is based on carbon

Correct Answer: All life on Earth is based on carbon

4. How big is the Earth compared with the other planets in the solar system?

A) Fifth-largest
B) Fourth-largest
C) Third-largest
D) Second-largest

Correct Answer: Fifth-largest

5. Which choice accurately describes the function of the earth's atmosphere?

A) It absorbs all radiation from the sun
B) It blocks harmful radiation but traps warmth
C) It reflects all the radiation from the sun
D) It absorbs light radiation but blocks heat radiation

Correct Answer: It blocks harmful radiation but traps warmth

6. Which of the following is an opinion about the Earth?

A) The atmosphere is 21% oxygen
B) It is the only planet in the Universe that can support life
C) Its core is made out of iron
D) The atmosphere is mostly nitrogen

Correct Answer: It is the only planet in the Universe that can support life

7. What might happen if the Earth did not have a magnetic field?

A) The planet would immediately become too cold
B) The planet would immediately become too hot
C) The oxygen in the atmosphere might dissipate
D) We might be bombarded by dangerous cosmic rays

Correct Answer: We might be bombarded by dangerous cosmic rays

8. Water is essential for life on earth in the previous sentence what does essential mean...

A) Helpful
B) Useful
C) Necessary
D) Optional

Correct Answer: Necessary

9. Which factor is responsible for the Earth's gravity?

A) Its spin
B) Its tilt on an axis
C) Its mass
D) Its water

Correct Answer: Its mass

10. Which term best describes the outer core of the Earth?

A) Solid
B) Liquid
C) Molten
D) Gaseous

Correct Answer: Liquid