The Ozone Layer

After a hole in the Ozone layer was discovered, what was done about it?

• scientists are still uncertain of the results

• at an international meeting, they agreed to eventually stop production of CFCs

• they agreed to stop production of CFCs immediately

• they increased production of CFCs

Tags

NGSS.HS-ESS3-1

NGSS.HS-ESS3-4

Where are CFCs found

• in refrigerators, air conditioners and aerosols

• in a layer over the Artic

• in polystyrene packaging and televisions

• in roll on deodorants

Tags

NGSS.MS-PS1-3

In which layer of the atmosphere is the ozone layer found?

• troposphere

• stratosphere

• mesosphere

• thermosphere

What are "holes" in the ozone layer?

• places where the ozone concentrations are lower than under normal conditions, allowing more UV radiation to reach the Earth's surface.

• places where the ozone concentrations are higher than under normal conditions, allowing more UV radiation to reach the Earth's surface.

• places where the ozone concentrations are higher than under normal conditions, allowing lessUV radiation to reach the Earth's surface.

What is the name of the international agreement committing parties to phasing out ozone depleting substances and phasing down hydrofluorocarbons (HFCs)?

• Vienna Protocol

• Paris Agreement

• Montreal Protocol

• Antarctic Convention

Where is the 'hole' in the ozone layer located?

• Over the United States

• Over Europe

• Over Antarctica

• Around the equator

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.

Tags

NGSS.MS-PS1-3

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

Which is true about ozone formation and destruction? select all that apply

• Its formation and destruction is an example of a dynamic process in nature.

• It forms when a free oxygen atom reacts with a molecule of oxygen.

• UV radiation breaks up ozone by splitting off an oxygen atom.

• Ozone cannot reform once it absorbs UV radiation.

Tags

NGSS.HS-PS4-3

NGSS.HS-PS4-4

The ozone layer is an actual hole. True or false?

• True

• False