Ozone

What is not a place where ozone holes exist?

• Antartica

• nothern half of the US into Canada

• nothern Europe

• all answers

One way to stop the destruction of ozone is vy reducing human created pollutants.

• true

• false

The ozone destroying pollutants primarily comes from air conditioner coolants, refrigerator coolant, aerosol spray, and plastic foam.

• true

• false

Tags

NGSS.MS-ESS3-4

Layer of gaseous ozone in the stratosphere that protects life on earth by filtering out most harmful ultraviolet radiation from the sun

• Greenhouse Gases

• Troposphere

• Stratosphere

• Ozone Layer

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.MS-PS1-3

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-PS1-5

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

• 50

• 75

• 89

• 99

Though CFC production has been curtailed, the threat to upper atmosphericozone continues because CFCs

• become harmless quickly.

• destroy ozone for only a short time.

• persist but stop destroying ozone.

• persist and continue to destroy ozone for decades.

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

• reduced photosynthetic activity

• increased skin cancer

• increased likelihood of cataracts

• increased birth defects

Which statement regarding the decreased level of stratospheric ozone is correct?

• Increased photosynthetic activity has been measured in the phytoplankton around Antarctica

• The largest decrease in the level of stratospheric ozone over the Arctic region occurs between January and April

• Although the Montreal Protocol led to a reduction in the use of CFCs, it will have little effect on stratospheric ozone levels in the long term

• There is no correlation between the incidence of cataracts and skin cancers and the lower level so stratospheric ozone

• The global crop yields of wheat, rice, and corn have increased since the reduction in CFC use