1. BY: NISHITA BANERJEE
VI C

2. WHAT IS CLIMATE?
• Climate is the general weather
conditions of a place.
• It is the pattern of variation in
temperature, humidity, atmospheric
pressure, wind, precipitation etc.

3. • Climate of the world is changing at a
rapid speed.
• Changes in climate can be:
changes in average temperature
changes in rainfall patterns
changes in humidity level of a
place.

4. CHANGING CLIMATES
HAVE CHANGED LANDSCAPES
ARAVALLI HILL FORESTS, INDIA

5. CHANGES IN THE
FOLLOWING CAUSE
CLIMATE CHANGE:
CHANGE
• Sun’s output
• Earth’s orbit
• Drifting continents
• Volcanic eruptions
• Greenhouse gases

6. SOLAR OUTPUT CAUSES
ONLY MINOR CHANGES IN
EARTH’S TEMPERATURES.

7. •
In the distant past, these made a
big difference in climate over
millions of years by :
changing ice caps at the poles
altering ocean currents, which
transport heat and cold .

8. CONTINENTAL DRIFT

9. Huge volcanic eruptions can cool Earth
by injecting ash and tiny particles into
the stratosphere

10. COOLING EFFECT AFTER VOLCANIC
ERUPTION

11. BUT THE MOST
SIGNIFICANT FACTOR FOR CLIMATE
CHANGE ARE

12. GREENHOUSE GASES ARE:

13. FACTORY SMOKE
FOREST FIRES
VEHICLE EXHAUST
OIL REFINERIES

15. GREENHOUSE GASES
CAUSE

16. GREENHOUSE
EFFECT
• Greenhouse gases like
CO2 and H2O form a
blanket above the earth
surface.
• They trap the solar
heat.
• This leads to warming
of the atmosphere.

17. This leads to :
• More drought
• more flooding
• less ice and snow
• extreme weather
• rising sea level

18. FLOODS
DROUGHT
EXTREME WEATHER AND
NATURAL
CALAMITIES DUE TO GLOBAL
WARMING
POLAR MELTDOWN
SEVERE SNOWFALL

19. GLOBAL WARMING CAUSES MELTING GLACIERS
AND RISING SEA LEVELS

26. CYCLE
TO REDUCE YOUR
CARBON FOOTPRINT

27. BUT MAN’S GREED HAS ROBBED THE MOTHER
EARTH OF ITS BEAUTY AND BOUNTY.
WE HAVE TO STOP THIS MAYHEM BEFORE
ITS TOO LATE.

29. - MAHATMA
GANDHI.