Ozone Layer and Depletion Quiz

The ______ layer in the upper atmosphere shields the Earth from harmful ultraviolet rays.

Chlorofluorocarbons (CFCs), nitric oxide, chlorine, and bromine atoms are implicated in ______ depletion.

The ______ layer is depleting at a rate of about 5% every 10 years over Northern Europe, extending south to the Mediterranean and southern USA.

Ozone depletion over the ______ Regions is the most dramatic manifestation of a general global effect.

Ozone levels over the ______ have fallen over 10% since 1987, despite reductions in CFCs and other industrial compounds.

An ______ hole as large as that over Antarctica could remain a threat to the Northern Hemisphere for several decades.

In October 1998, the size of the hole in the ______ layer was three times the size of the USA.

Satellite data from ______ revealed that the ozone layer had depleted by 4- 8% in the Northern Hemisphere and by 6-10% in the Southern Hemisphere between 1978 and 1990.

An expanding ______ of cold air forming in the lower stratosphere above the Arctic leads to increased ozone loss.

These materials include ______, plastics, and even metals.