Human Impact on Air Sec 1-3; water included

Air pollution is when _________ substances build up in the air to unhealthy levels.

• fun

• good

• harmful

• weird

A primary pollutant is....

• nitrogen and oxygen gas, as well as small amounts of argon, carbon dioxide and water vapor.

• A pollutant that is put into the air by human activity

• pollutants react with other primary pollutants or with naturally occurring substances such as water vapor.

• When harmful substances build up in the air to unhealthy levels

True or False. Secondary pollutants form when primary pollutants react with other primary pollutants or with naturally occurring substances such as water vapor.

• True

• False

________ is when air pollution hangs over the urban areas and reduces visibility.

• smoke

• fog

• acid rain

• smog

What are the main causes of smog?

• pollutants released from homes

• pollutants released by vehicles and industries

• pollutants released from wastewater

• pollutants in acid precipitation

Water is a _____________ resource.

• nonrenewable

• nuclear

• renewable

• alternative

What are the 3 main parts of the water cycle?

• precipitation, evaporation, and condensation

• evaporation, precipitation, and translation

• condensation, rain, and snow

• evaporation, condensation, and water

What is surface water?

• salt water in the ocean

• water in aquifers

• freshwater on Earth's land surface

• area of land that is drained by a river

A watershed is the area of ________ that is drained by a river.

• land

• water

• lake

• ocean

What is groundwater?

• water on top of Earth's surface

• ocean water

• water in the rivers

• water beneath the Earth's surface in sediment and rock formations