GEC-111-777777775555555555555554447TH.pdf

mamarobanosair 26 views 12 slides Aug 13, 2024
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About This Presentation


5 Famous Female Table Tennis Player of All Time
Ding Ning
Nationality: Chinese
Playing style: Left-handed, shakehand grip
Born: 20 June 1990
Height: 1.71 m (5 ft 7 in)
Olympic medals: 4 (3x gold, 2016 Singles Champion)
World cup medals: 10 (10x gold, 3x Singles Champion)
We’ll start off this list...


Slide Content

CLIMATE CHANGE

What is Climate & Weather?


Climate is defined
as an area's long-
term weather
patterns.
Weather is the
state of the
atmosphere at a
particular place
during a short
period of time

What is climate change?


Climate change is a
change in the pattern of
weather, and temperatures.
Human activities,
especially emissions of
heat-trapping greenhouse
gases from fossil fuel
combustion, deforestation,
and land-use change, are
the primary driver of the
climate changes observed
in the industrial era.

EFFECTS OF GLOBAL WARMING

What Causes Climate Change?
Carbon dioxide (CO
2
),
methane (CH
4
) and water
vapour (H
2
O) are greenhouse
gases that are found in the
atmosphere.
Energy travels from the Sun
to the Earth as short wave
radiation. It does not interact
strongly with the greenhouse
gas molecules so it reaches the
Earth’s surface.
CO
2
CO
2
CH
4
H
2O
CH
4
CO
2
H
2O
CH
4
CH
4
CO
2

What Causes Climate Change?
The higher the proportion
of greenhouse gases in the
atmosphere, the more
radiation is absorbed.
This causes a rise in the
temperature of the Earth and
is known as the greenhouse
effect.
This increase in temperature
drives climate change.
CO
2
CO
2
CH
4
H
2O
CH
4
CO
2
H
2O
CH
4
CH
4
CO
2
CO
2
CO
2
CO
2
CO
2
CO
2
CO
2
CO
2
CO
2
CO
2
CO
2
CO
2
CO
2
CO
2
CH
4
CH
4
CH
4







Changes in the atmosphere
Natural processes
Volcanic eruptions
Tectonic plate movement
Changes in the sun
Human activities – any activity that releases
“greenhouse gases” into the atmosphere
Natural causes of Earth’s
climate to change






Greenhouse gases (CO2,N2O,CH4)
Carbon dioxide- most prominent greenhouse gas
released into the atmosphere by human
activities through burning of fossil fuel ( coal,
natural gas and industrial processes.)
Methane- gas emitted from sources like
agriculture, & natural gas production.
Water Vapor- primarily influenced by natural
processes and climate feedbacks.
Nitrous oxide

Anthropogenic causes of Climate Change

Anthropogenic causes of Climate Change





Burning fossil fuels for heating and cooking,
generating electricity and powering vehicles
releases carbon dioxide into the atmosphere.
Deforestation (destruction of forests)
releases carbon dioxide and reduces the
number of trees able to capture carbon
dioxide from the atmosphere.
Reduction of biodiversity creates an unstable
ecosystem. Nature loss leads to ecosystems
that are less able to capture carbon from the
atmosphere and less resilient to rising
temperatures.
Untitled by © Sam Hobson / WWF-UK licensed under CC BY
Deforestation for future agriculture plantation-Tahuamanu Province,
heading to Centro Poblado de Alerta - Madre de Dios Region, Peru by
© Nicolas Villaume / WWF-US licensed under CC BY

Consequences of climate change







Changes in
Glaciers and ice sheets
Sea level change
Sea ice
Heavy rainfall across the
globe
Extreme Drought
Decline in Crop
productivity
Rise in temperature
Photo credit AFP