Ch. 19 Ozone

What absorbs ultraviolet rays in the atmosphere?

• troposphere
• stratosphere
• ozone layer
• greenhouse gases

Which of these sets of three items produce CFCs

• cars, factories, and cardboard

• spray cans, cardboard, insulation

• spray cans, refrigerant, cardboard

• spray cans, refrigerant, insulation

How many oxygen atoms does a molecule of ozone contain?

• 1

• 2

• 3

• 4

Where is the "GOOD" ozone located?

• troposphere

• stratosphere

• mesosphere

• thermosphere

What chemical is responsible for breaking up the ozone?

• CFCs

• Carbon Dioxide

• Nitrogen

• Oxygen

This protects us from harmful UV rays from the sun

• Troposphere
• Stratosphere
• Greenhouse Effect
• Ozone Layer

The Montreal Protocol banned the use of CFCs. What so they hope this will do for the ozone layer?

• Deplete it completely
• Make the ozone hole smaller
• Make the ozone hole larger
• Thin the layer to allow more gas to escape

When oxygen gas in the lower stratosphere is struck by this, it splits, leading to the formation of a ozone molecule.

• visible light
• ultraviolet radiation
• infrared
• gamma rays

Which is NOT true about ozone formation and destruction?

• Its formation and destruction is an example of a dynamic process in nature.

• It forms when a free oxygen atom reacts with a molecule of oxygen.

• UV radiation breaks up ozone by splitting off an oxygen atom.

• Ozone cannot reform once it absorbs UV radiation.

Innermost layer of the atmosphere. It contains about 75% of the mass of earth’s air and extends about 17 kilometers above sea level

• Stratosphere

• Troposphere

• Ozone Layer

• Mesosphere