GLOBAL WARMING

INTRODUCTION

• WHAT IS GLOBAL WARMING• CAUSES • EFFECTS• PREVENTIVE MEASURES• GREEN HOUSE GASES

GLOBAL WARMING

• Increase of earths average surface temperature due to effect of green house gases.

CAUSES OF GLOBAL WARMING

• Green house gases emitted into earth’s near surface atmosphere.

• Green house gases are both man made and occur naturally.

GREEN HOUSE GASES

• Carbon dioxide (transportation , power plants)• Methane (animals)• Nitrous oxide• CFC• Water vapour

GREEN HOUSE EFFECT

• Infra red rays from earth surface absorbed by green house gases and sent back to earth.

EFFECTS OF GLOBAL WARMING

Rise in sea levels world wide More killer storms

EFFECTS OF GLOBAL WARMING

• Disappearance of coral reefs

• Massive crop failure

PREVENTIVE MEASURES OF GLOBAL WARMING

• Plant trees• Buy energy efficient products• Reduce , reuse , recycle• Encourage others to conserve

SUMMARY

• Global warming – increase of earth temp• Causes – green house gases• Effects – crop failure , coral reef, spread of

storms ,• Prevention – plant trees, reuse, recycle,

reduce

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