Global Warming

Agenda

What is Global Warming?

Causes and effects

Resolutions or Controlling

What is global warming?

Global warming is when the earth heats up (the temperature rises). It happens when greenhouse gases (carbon dioxide, water vapor, nitrous oxide, and methane) trap heat and light from the sun in the earth’s atmosphere, which increases the temperature.

The Greenhouse Effect• The greenhouse effect is

when the temperature goes up, on Earth, since the sun’s heat and light energy is trapped in the earth’s atmosphere.

• While the heat from the sun enters our atmosphere, the heat has trouble leaving back out our atmosphere

Who is responsible?

Power Plants

Industrialization

Transportation--Fuels for transports

Throwing Garbage

Deforestation

Urbanization

Other Causes of GW

• Turning on a light.• Watching T.V.• Washing or drying clothes.• Using a hair dryer.• Riding in a car.• Heating a meal in the microwave.• Using an air conditioner.• Playing a video game.

Consequences of Global Warming

Catastrophic weather such as hurricanes will increase.

Melting polar icecaps will raise ocean levels; the Arctic Ocean could be ice free in summer by 2050.

Wildfires will be more frequent.

Up to 300,000 people a year will die – partly from the spread of tropical diseases.

More than a million species worldwide could be extinct by 2050.

Global sea levels could rise by more than 20 feet, devastating coastal

areas worldwide.

The future of our coastal cities?

Declining Trees

Droughts

The Earth is getting warmer.

Controlling the Problem

Controlling the Problem

Carry out energy saving scheme → reduce the pollution produced by burning fossil fuels

Encourage the factories to replace fossil fuels by renewable fuels, which would not cause environmental pollution

Build more plants → reduce the pollutants e.g. CO2

Controlling the Problem

Reduce the use of plastic bags → as burning plastic emit CH4 (Methane)

Recycle the resources, e.g. plastic

Reduce the use of sprays → as CFCs would be emitted out

Controlling the Problem

Plantation Reduce the use of air-

conditioner, which will emit CFCs

Use public transportation instead of private cars → reduce the pollutants emitted by cars

Individual Actions

Individual Actions

• Do not throw garbage on the floor.• Do not use deodorant sprays.• Do not dump waste into rivers.• Do not throw dead animals into rivers.• Do not dump toxic waste in the water.

Cool World