Atmosphere & Air Quality

Front

What is the Clean Air Act?

Back

The Clean Air Act is a US government law established in 1970 that sets air quality standards to protect public health and the environment.

Front

What gas makes up 78% of Earth's atmosphere?

Back

Nitrogen.

Front

What layer of the atmosphere do meteors burn up in?

Back

Mesosphere.

Front

What gas composes 21% of the atmosphere?

Back

Oxygen.

Front

What is the outermost layer of the atmosphere?

Back

Exosphere.

Front

What is the primary function of the atmosphere?

Back

To protect life on Earth by providing oxygen, regulating temperature, and shielding from harmful solar radiation.

Front

What are the main components of Earth's atmosphere?

Back

Nitrogen, Oxygen, Argon, Carbon Dioxide, and trace gases.

Front

What is air quality?

Back

Air quality refers to the condition of the air within our surroundings, which can be affected by pollutants and other harmful substances.

Front

What is a pollutant?

Back

A pollutant is a substance that contaminates the air, water, or soil, and can harm human health and the environment.

Front

What is the greenhouse effect?

Back

The greenhouse effect is the process by which certain gases in the atmosphere trap heat, keeping the Earth warm.