POLLUTION

Ozone is made of ____ oxygen atoms.

• 1

• 2

• 3

• 4

Which type of rays does the ozone protect us from?

• gamma

• ultraviolet

• x-rays

• radio

What percent of the air we breathe is nitrogen?

• 12%

• 56%

• 99%

• 78%

What was the main source of air pollution before 1950?

• emissions from factories & power plants

• methane from farm animals

• cars & trucks

• airplane engines

Photochemical smog is caused by:

• acid rain

• cyanobacteria

• chlorofluorocarbons

• hydrocarbons

This gas can come in from basements and cause lung cancer.

• radon

• argon

• helium

• oxygen

The Ozone Hole was discovered in the 1970's and was caused by:

• acid rain

• chlorofluorocarbons

• hydrocarbons

• radon gas

Tags

NGSS.MS-PS1-3

The lungs are ___ water.

• 83%

• 64%

• 79%

• 31%

Water pollutants include __________, heavy metals, and household chemicals.

• animals

• sediment

• methane

• deforestation

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Water pollution is ___________ globally due to the increasing human population.

• increasing

• decreasing

• staying the same

• decreasing by half

Tags

NGSS.MS-ESS3-4