Question

An increase in the concentrations of greenhouse gases in Earth's atmosphere would have which of these effects on temperature?

A.
a decrease in average temperatures on Earth's surface

B.
an increase in average temperatures on Earth's surface

C.
an increase in average temperature in the upper atmosphere

D.
a decrease in average temperature within all Earth systems

Answer 1

The answer is B, an increase in average temperatures on Earth's surface.

Answer 2

An increase in the concentrations of greenhouse gases in Earth's atmosphere would cause an increase in the average temperatures on Earth's surface. The correct answer is B.

The greenhouse effect is when gases accumulate in the Earth's atmosphere and then these gases absorb and trap the heat from the sun in the lower atmosphere. This means that the heat that should be escaping into space is trapped on Earth. Some gases responsible for this effect are:

• Carbon Dioxide
• Methane
• Nitrous Oxide

and many more. These, however, are the most responsible for the greenhouse effect. This effect will increase temperatures on the earth's surface by trapping heat in the lower (not upper) atmosphere. Therefore options A, C, and D are incorrect.

An increase in the concentrations of greenhouse gases (like the ones mentioned) in Earth's atmosphere would cause heat from the sun to be trapped on Earth, leading to an increase in the average temperatures on Earth's surface. Therefore the answer is B.

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