Stratospheric Ozone Depletion

The breakdown of stratospheric ozone
I. can originate from the emission of chlorofluorocarbons (CFCs).
II. is catalyzed through a free chlorine (Cl) atom.
III. prevents UV rays from reaching the earth’s surface.

• I only

• III only

• I,&II

• I,II,& III

Tags

NGSS.HS-PS1-5

Which agreement allowed for a reduction, and eventual elimination, of CFC production and use?

• Montreal Protoccol

• Kyoto Protoccol

• Paris Agreement

• Yo MaMa

Tags

NGSS.HS-ESS3-4

NGSS.HS-ETS1-3

How do CFCs affect ozone production?

• UV radiation frees a chlorine atom, which breaks down ozone.

• Infrared radiation frees a chlorine atom, which breaks down ozone.

• UV radiation frees a fluorine atom, which breaks down ozone.

• Infrared radiation frees a chlorine atom, which breaks down ozone.

Tags

NGSS.HS-PS4-3

Depletion of ozone layer is a concern because it normally absorbs ____% of the sun's UV radiation. 

• 50

• 75

• 89

• 99

Tags

NGSS.HS-PS4-3

NGSS.HS-PS4-4

What is the main cause of ozone depletion?

• Carbon dioxide emissions

• Deforestation

• Chlorofluorocarbons (CFCs)

• Methane emissions

Which is NOT a result in the reduction of stratospheric ozone?

• reduced photosynthetic activity

• increased skin cancer

• increased eye problems

• increased birth defects

• suppressed immune systems

What is the primary cause of ozone depletion?

• Excessive CO2 emissions

• Chlorofluorocarbons (CFCs) and other halogenated ozone depleting substances

• Deforestation

• Volcanic eruptions

Which of the following best describes why there has been a reduction in ozone depletion over the last half of the twentieth century?

• The United States began decreasing CFC

  CFC emissions under regulations in the Clean Air Act.

• Less developed countries developed a global plan to decrease CFC emissions by signing Comprehensive Environmental Response, Compensation Liability Act ( CERCLA ).

• Several more developed countries signed the Kyoto Protocol as an agreement to reduce greenhouse gas emissions.

• A global plan to decrease CFC

  CFC emissions was enacted by signing the Montreal Protocol.

Tags

NGSS.HS-ETS1-3

Ozone depletion in the Earth's atmosphere is mainly caused by:

• Excessive planting of trees

• Chlorofluorocarbons (CFCs) from aerosols and refrigerants

• The use of solar panels

• Increased carbon dioxide emissions from cars

Tags

NGSS.MS-PS1-3

Which of these has been controlled in an attempt to reduce the depletion of ozone in Earth’s atmosphere?

• methods of filtering gasoline

• use of chlorofluorocarbons (CFCs)

• methods of radioactive waste storage

• use of mercury (Hg) compounds