Ozone depletion & Greenhouse gases

Ozone that is implicated in human respiratory health issues and photochemical smog is found in the...

• Lithosphere

• Mesosphere

• Stratosphere

• Troposphere

The primary cause of stratospheric ozone depletion.

• Chlorine atoms

• Sulfur dioxide

• Mercury

• NOx

Which of the following best exemplifies global collaboration for a sustainable environment? (Getting rid of CFCs)

• The Antarctic Treaty of 1961

• The Clean Air Act of 1972

• CERCLA (Superfund)

• The Montreal Protocol

Which of the following best describes the importance of ozone in the stratosphere to life on Earth?

• Ozone reflects X-rays from the Sun back into space.

• Ozone absorbs most of UV-B and UV-C radiation from the Sun.

• Ozone helps to moderate surface temperature by absorbing CO2 and CH4.

• Ozone increases mutation rates and accelerates evolution in a variety of species.

The drop in stratospheric ozone levels in the Southern Hemisphere (the "ozone hole") is most evident during which season?

• Antarctic spring (October)

• Antarctic autumn (April)

• Antarctic summer only (January)

• Antarctic winter only (July)

Most ozone is formed in the stratosphere by reaction between carbon dioxide and free oxygen atoms.

• True

• False

The second step of ozone formation involves atomic oxygen combining with what molecule?

• CO2

• O2

• NO2

• 2H2O

The breakdown of CFCs in the atmosphere is caused by UV rays.

• True

• False

Tags

NGSS.HS-PS4-3

NGSS.HS-PS4-4

Although levels of CFCs in the atmosphere are much lower than those of CO2 , CFCs are still potent greenhouse gases because they

• remain in the atmosphere for only a brief time

• lack natural sources

• are much more efficient at absorbing thermal radiation

• are more difficult to remove from smokestacks and tailpipes

Tags

NGSS.HS-ESS3-5

Which of the following best describes the mechanism of the greenhouse effect in Earth's atmosphere?

• Infrared radiation from Earth's surface is absorbed by gases in the atmosphere.

• Cosmic radiation from deep space is absorbed by gases in the atmosphere.

• Alpha radiation from the Sun is absorbed by water vapor in the atmosphere.

• Ultraviolet radiation from the Sun is absorbed by ozone gas in the stratosphere.

Tags

NGSS.HS-PS4-3