Ozone Layer and Global Warming Quiz

At what height is the ozone layer located above sea level?

• 10-30 km

• 20-40 km

• 40-60 km

• 50-70 km

Why is the ozone layer positioned where it is?

• Because it contains the most nitrogen

• Because it's the coldest atmospheric layer

• Because it's the first layer meeting UV radiation

• Because it has the highest air pressure

What is the chemical composition of ozone?

• Two oxygen atoms

• Four oxygen atoms

• One oxygen atom

• Three oxygen atoms

What is the thickness of the ozone layer at standard temperature and pressure?

• 20 kilometers

• 5 millimeters

• 3 millimeters

• 1 millimeter

What unit is used to measure ozone layer thickness?

• Pascal units

• Dobson units

• Kelvin units

• Atmospheric units

How many Dobson units equal 1 millimeter?

• 50 units

• 75 units

• 100 units

• 200 units

Which type of UV radiation completely penetrates the ozone layer?

• UV-A

• UV-B

• UV-C

• None of these

What percentage of UV-B rays are blocked by the ozone layer?

• 85%

• 90%

• 95%

• 100%

When does ozone layer erosion typically increase?

• December

• September

• March

• June

Which compound is commonly found in air conditioning units that can harm the ozone layer?

• Nitrogen oxide

• Methyl bromide

• Halons

• CFCs (Freon)