Amplify Science Ozone Layer Reading

What is continuously forming and breaking down in the stratosphere due to ultraviolet radiation?

• Oxygen

• Carbon dioxide

• Ozone

• Nitrogen

Tags

NGSS.HS-PS4-3

Using equilibria, how is the concentration of ozone maintained in the ozone layer?

• Through the constant emission of greenhouse gases

• By the balance between ozone formation and breakdown

• Due to the magnetic field of the Earth

• Through photosynthesis by plants

What is the role of ozone in the stratosphere?

• It generates oxygen for the Earth's atmosphere

• It absorbs harmful ultraviolet radiation

• It contributes to global warming

• It produces rain in the troposphere

What is the resulting benefit for life on Earth due to the absorption of harmful ultraviolet radiation by ozone?

• Increased plant growth

• Protection from harmful ultraviolet radiation

• More rainfall

• Reduction in sea levels

What percentage of UV-A is absorbed by the ozone layer?

• 5%

• 95%

• 100%

• 0%

What is the chemical formula for ozone?

• O

• O2

• O3

• O4

Which of the following correctly represents the formation of an ozone molecule from oxygen?

• O2 → 2O

• O2 → O3

• O + O2 → O3

• 2O2 → 2O3

Tags

NGSS.HS-PS1-1

Which of the following reactions represents the destruction of the ozone layer?

• O3 → O2 + O

• O + O2 → O3

• O2 → O + O

• O3 → 3O

Why does the removal of ozone occur very slowly?

• Because the reaction requires sunlight

• Because the O concentration is very high

• Because the O concentration is very low

• Because the reaction is exothermic

What do radicals from CFCs and NOx catalyse?

• The production of ozone

• The breakdown of ozone

• The stabilization of ozone

• The conversion of ozone to oxygen