A Hole in Earth’s Ozone Layer Quiz

What is the Earth's atmosphere composed of?

• A single layer of oxygen

• A mixture of liquids

• A layer of gases that surrounds the planet

• Only the ozone layer

What role does the ozone layer play in protecting Earth?

• It generates UVB energy

• It reflects all types of energy back into space

• It blocks all energy from the sun

• It absorbs UVB energy and prevents it from reaching Earth's surface

Where is the ozone layer located?

• At the Earth's core

• Just above the Earth's surface

• 10 km (6 mi) above Earth's surface

• In the Earth's lower atmosphere

What was a significant observation made by scientists in the 1970s regarding the ozone layer?

• The ozone layer was expanding

• The amount of ozone in the atmosphere was increasing

• The amount of ozone in the atmosphere was decreasing all over Earth

• UVB energy was no longer a threat

What harmful effect can result from the depletion of the ozone layer?

• Increased risk of skin cancer

• Decrease in global temperatures

• Increase in oxygen levels

• Reduction in plant growth

What was the main cause of the thinning of the Earth's ozone layer according to the text?

• The increase in Earth's temperature

• The reaction between ozone and carbon dioxide

• The reaction between ozone in the atmosphere and certain chemicals made by humans

• Natural fluctuations in the Earth's atmosphere

Tags

NGSS.HS-LS2-7

What change occurred after countries identified the chemicals causing the ozone layer to thin and took action?

• The hole in the ozone layer continued to grow at the same rate

• The hole in the ozone layer began to shrink

• The hole in the ozone layer remained the same size

• The hole in the ozone layer expanded to cover the entire Earth

When did the chemical bans that helped reduce the size of the hole in the ozone layer go into effect?

• In the 1970s

• In 1989

• After 2000

• The text does not specify

Which statement is true regarding the relationship between the ozone layer and global climate change?

• The hole in the ozone layer causes global climate change.

• The ozone hole is unrelated to global climate change.

• The ozone layer contributes directly to global temperature rise.