Environmental Issues

How does the ozone layer in the stratosphere protect life?

• It helps plants make food

• it absorbs UV energy from the sun

• it makes us tan

• it insulates the earth

What human made chemicals break down ozone molecules?

• carbon dioxide

• mercury

• CFC's (chloroflorocarbons)

• natural gas (methane)

What are the sources for CFC's?

• exhaling

• fossil fuels

• most industries

• refrigerators and air conditioners

which of the following are green house gases?

• methane, carbon dioxide, and mercury

• methane, carbon dioxide, and water vapor

• methane, acid rain, and cookies

• acid rain, water, and sulfur dioxide

What is not a possible effect of global warming?

• some areas will have warmer climates, some areas will have colder climates

• the average global temperature will decrease

• weather patterns will change

• ocean water levels will rise

Which will not be an affect of global warming?

• Less ice will cause more heat absorption

• maple trees and beech trees will be healthier

• many plants species will die if temperatures are outside of the plant's normal range.

• Algae will grow faster in warmer water

What pollutants from fossil fuels combine with water to make acid rain?

• methane

• CFC's

• carbon moxide

• sulfur dioxide

which of the following would help reduce acid rain?

• industries and power plants burning only coal

• industries and power plants installing scrubbers in smokstacks

• industries and power plants burning oil

• there is nothing that can be done

Acid rain has a pH below

• 7

• 6

• 5.6

• 8

Why aren't the Great Lakes as affected by acid rain as the lakes in the Rockies?

• there isn't as much air pollutants (sulfur dioxide) in the are around the Great Lakes

• The Great lakes are slightly basic, due to limestone in the subtrate

• The Great lakes are slightly acidic, due to limestone in the substrate

• The Great Lakes are so big