Unit 4: The Atmosphere Study Guide (Enviromental Science)

Front

What causes acid rain?

Back

Emissions of sulfur dioxide and nitrogen oxides.

Front

What is a large source of air pollution created by humans?

Back

Burning fossil fuels.

Front

List the layers of Earth’s present atmosphere in order, starting at the Earth’s surface.

Back

Troposphere, Stratosphere, Mesosphere, Thermosphere, Exosphere.

Front

What is hydropower and why is it considered a better choice than fossil fuels?

Back

Hydropower uses water to generate energy, which is a renewable resource and does not add carbon dioxide gas to the atmosphere.

Front

What are the consequences of deforestation?

Back

Consequences include loss of biodiversity, disruption of water cycles, and increased carbon dioxide levels in the atmosphere.

Front

Define the term 'renewable resource'.

Back

A renewable resource is a natural resource that can be replenished naturally over time, such as solar energy, wind energy, and hydropower.

Front

What is the greenhouse effect?

Back

The greenhouse effect is the process by which certain gases in Earth's atmosphere trap heat, preventing it from escaping into space and thereby warming the planet.

Front

What role do trees play in the carbon cycle?

Back

Trees absorb carbon dioxide during photosynthesis, helping to reduce greenhouse gas levels in the atmosphere.

Front

What are nitrogen oxides and how do they contribute to air pollution?

Back

Nitrogen oxides are gases produced from burning fossil fuels and contribute to the formation of smog and acid rain.

Front

Explain the significance of the ozone layer. What does it protect us from?

Back

The ozone layer absorbs the majority of the sun's harmful ultraviolet (UV) radiation, protecting living organisms on Earth.