Most (78%) of the air we breathe is made up of _________.

• oxygen

• carbon dioxide

• nitrogen

• water vapor

As water vapor rises, it cools. As ________ occurs, clouds are formed.

• evaporation

• melting

• precipitation

• condensation

Tags

NGSS.MS-ESS2-4

Lower altitudes experience ________ air pressure to/than higher altitudes.

• Higher

• Lower

• Equal

Which color absorbs more light energy from the sun and converts it to the most heat?

• white

• gray

• silver

• black

Tags

NGSS.MS-PS3-3

NGSS.MS-PS3-4

Which 2 sources of pollution are natural and release CO₂ into the air? (Pick 2)

• forest fires

• volcanic activity

• burning coal

• coal dust in mines

Which term describes air pollutants that are already dangerous when they enter the air?

• primary

• secondary

• particulate

• nonpoint-source

Which term describes air pollutants that result from a chemical reaction?

• primary

• secondary

• particulate

• nonpoint-source

Tags

NGSS.MS-PS1-2

What is the source of most air pollution?

• burning fossil fuels

• volcanic activity

• forest fires

• wind blowing particulate matter

Tags

NGSS.MS-ESS3-3

Particles in smoke, soot, and coal dust are all examples of _______.

• fossil fuels

• particulate matter

• volatile organic compounds

• volcanic matter

Tags

NGSS.MS-ESS2-5

Overgrazing or overfarming can loosen soil and make dust from _______ worse.

• volcanoes

• soot

• wind

• fires

Tags

NGSS.MS-ESS3-3

NGSS.MS-ESS3-4