Global Warming

The phenomenon that describes gradual increase in the earth's temperature over a period of time is called

• Weather

• Convection

• Global Warming

• Lumbering

The major greenhouse gas that causes ozone depletion is

• Nitrogen sulfates

• Chlorofluorocarbons

• Carbon dioxide

• All of the above

A situation where the sun's heat gets trapped within the earth's atmosphere is as a result of excessive release of

• Carbon dioxide

• Nitrogen oxide

• Water vapor

• None of the above

Which of these statements correctly describes Greenhouse effects?

• A house with green decorations

• The escape of heat from the earth's atmosphere into space

• An absorption of harmful UV rays by the ozone layer

• A situation where the presence of excess carbon dioxide gases in the air cause heat to be trapped within it

The chemical symbol of ozone is

• O₁

• O₂

• O₃

• O₄

The factor that plays a major role in the separation of CFC gases into Cl and Fluorocarbon is

• Sunlight

• Heat

• UV rays

• Water

The reaction between ozone (O₃₎ and chlorine (Cl) results in which of these?

• The production of water vapour

• Release of heat

• Reduction of ozone to oxygen

• All of the above

Which of these careless human activities result in the release of gases that causes global warming?

• Tree felling

• Burning of fossil fuels i.e coal, wood

• Fumes from exhaust pipes

• All of the above

The harmful light from the sun that is capable of causing the death of tiny sea creatures and skin cancer to humans is

The following are some of the problems we face as a result of global warming except

• Rising sea level/Flooding

• Regular occurrrence of seasons

• Melting glaciers/icebergs

• Heat waves and wildfires