Question

Q11. Which of the following reason can explain that carbon dioxide is considered as an important factor for climate change?

A.carbon dioxide absorbs water vapor

B.carbon dioxide react with water vapor

C.carbon dioxide absorbs infrared radiation

D.carbon dioxide can be broken down as carbon atoms and oxygen molecules by ultraviolet radiation, then the carbon burns with the oxygen.

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Q12. Which of the following statements is NOT true?

A.Atmosphere is NOT well-mixed from bottom to top.

B.Atmospheric pressure decreases with elevation.

C.Atmosphere has no sharply defined top.

D.Atmospheric temperature decreases uniformly with height.

E.Most of atmospheric mass is relatively close to the ground.

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Q13. Where does the heating in the thermosphere come from?

A.long wave light rays emitted from the Earth

B.short wave light rays reflected from the Earth

C.infrared rays from the Sun

D.infrared rays from the Earth

E.ultraviolet rays from the Sun

Answer 1

11) carbon dioxide absorbs infrared radiation will be answer. Molecules present in carbon dioxide absorbs infrared radiation this is why carbon dioxide play an important role in climate change.

1) Atmosphere is not well mixed from bottom to top is incorrect because atmosphere is homogeneous. So it is well mixed from bottom to top.

13) ultraviolet rays from the sun will be answer