Review 7

The impact on the planet due to global warming is called

• natural change

• the weather

• climate change

Which of the following is a climate function of ocean currents?

• Oxygen circulation

• Moves warm waters from equator towards poles

• Moves storms away from coastal regions

Increasing global temperatures…

• are likely to cause effects that lead to even more rise in global temperatures.

• will lower sea levels all over the world.

• will increase freshwater availability.

Complete this sentence. Warmer air…

• Falls faster than cooler air.

• Can hold more moisture than cooler air

• Makes no difference to global warming.

What does this picture show?

• The greenhouse effect

• Global warming

• Climate change

Arrows 5 and 8 show…

• the outer atmosphere blocking solar radiation before it enters.

• solar radiation that has entered the atmosphere bouncing back out of the atmosphere.

• solar radiation increasing over time.

What does arrow #4 show?

• heated air cooling, then falling

• the outer atmosphere blocking solar radiation before it enters.

• solar radiation decreasing over time

If greenhouse gas levels in the atmosphere continue to increase, which arrow will need to be made larger?

• 6

• 8

• 9

The amount of ultraviolet radiation (like arrow #2) hitting Earth’s surface is greatly reduced by which gas layer in the atmosphere?

• Methane

• Carbon dioxide

• Ozone

What might happen if our atmosphere didn't block some radiation that the sun produces?

• Too much solar energy would reach Earth’s surface and it would be too hot for life.

• Increasing greenhouses gases would no longer be a problem.

• We would have an Ice Age.