Earth Science Review

Front

What are the two main gases that contribute to global warming?

Back

Methane and carbon dioxide.

Front

What is a nonrenewable energy source?

Back

Oil.

Front

If it is 9 a.m. in the Eastern Time Zone, what time is it in the Pacific Time Zone?

Back

6 a.m.

Front

What process breaks down rock into sand-sized sediment?

Back

Weathering.

Front

What is a reason that would not increase electricity usage?

Back

Increased use of locally grown organic goods.

Front

What is the definition of global warming?

Back

The gradual increase in Earth's average temperature due to human activities, primarily the emission of greenhouse gases.

Front

What is renewable energy?

Back

Energy that is collected from resources that are naturally replenished, such as sunlight, wind, and water.

Front

What is weathering?

Back

The process of breaking down rocks into smaller pieces by natural forces such as wind, water, and temperature changes.

Front

What is the greenhouse effect?

Back

The trapping of the sun's warmth in the planet's lower atmosphere due to the presence of greenhouse gases.

Front

What are time zones?

Back

Regions of the Earth that have the same standard time.