ozone layer

The thinning of the ozone layer is also known as the

• ozone hole

• ozone gap

• ozone space

• ozone void

Ozone is formed in the

• troposhere

• stratosphere

• mesosphere

• thermosphere

The ozone layer is an actual hole. True or false?

• True

• False

Which type of radiation is absorbed by the ozone layer?

• infrared

• gamma

• visible light

• ultraviolet

Ozone is made of which chemical element?

• Carbon

• Hydrogen

• Oxygen

• Nitrogen

CFCs are responsible for the damage caused to the ozone layer. Select ALL of chemical elements make up CFCs.

• Carbon

• Hydrogen

• Oxygen

• Fluorine

• Chlorine

When we discuss greenhouse gases what is the main one we discuss?

• Methane (CH₄)
• Carbon Dioxide (CO₂)
• Nitrous oxide (N₂O)
• Flourinated gases

The main human activity that releases greenhouse gases is...

• using bottled water
• burning fossil fuels
• texting on cellphones
• eating meat

Without any greenhouse effect the Earth would be...

• Fine
• Too Cold to Support Life
• Very Hot

Over the past 200 years, the level of carbon dioxide in the atmosphere has

• decreased slightly.   
• increased until recently, and then decreased.
• increased steadily.   
• stayed about the same.