Warm-Up Ozone Depletion Questions

hydrogen

A second category of refrigerants currently available is the hydrochlorofluorocarbons (HCFCs). Although they contain chlorine, which is damaging to the ozone layer, they also contain_________, which makes them chemically less stable once they enter the atmosphere.

they are chemically very stable

CFCs are able to reach the stratosphere because ________.

hydrogen

CFCs are chemically very stable because they contain no ____.

Stratospheric

CFCs are damaging to the __ ozone layer.

HFC

CHF₂CF₃ refrigerant is a _____.

stratospheric

Capturing and ultimately eliminating the use of chlorofluorocarbons is being done in the United States to stop damage to the _____ ozone layer.

chlorine, fluorine, and carbon

Chlorofluorocarbons (CFCs) consist of ___, ___, and __ .

zero ODP

HFC fluorocarbon refrigerants cause no harm to the stratospheric ozone, they have ______.

CFCs

Of the three common types of refrigerants _____ has the highest high ozone-depletion potential (ODP)

a harmful pollutant

Ozone at ground level is ____.

3

Ozone in the stratosphere consists of molecules containing __ oxygen atom(s).

ultraviolet

The ozone layer absorbs and scatters ____ light from the sun, which prevents harmful amounts from reaching the earth.

HFCs

Refrigerants which contain no chlorine at all are called ______.

chlorine monoxide

The existence of ____ in the upper stratosphere indicates that the ozone layer is being destroyed.

more

When ozone depletion occurs, ______UV radiation penetrates to the Earth's surface.

c. R22

Which is an HCFC? a. R134a b. R12 c. R22 d. R113

Chlorine

____ in refrigerants causes ozone destruction.

Skin cancers, cataracts, and reduced crop yields

_____ are a result of damage to the Earth's ozone layer.

Bromine

______ containing compounds, which are contained in typical Halon fire extinguishers, also destroy the ozone.

Halocarbon

_________ is a halogenated hydrocarbon containing one or more of the three halogens: fluorine, chlorine, and bromine.

Chlorofluorocarbons, Hydrychlorofluorocarbons, and Halons

__________ are controlled by the Montreal Protocol