Global Warming

What is global warming? 

Global warming is when the earth heats up (the temperature rises). It happens when greenhouse gases (carbon dioxide, water vapour, nitrous oxide, and methane) trap heat and light from the sun in the earth’s atmosphere, which increases the temperature. This affects all life on earth. (Humans, animals, plant life etc)

What is the greenhouse effect?

The greenhouse effect is when the temperature rises because the sun’s heat and light is trapped in the earth’s atmosphere. This is like when heat is trapped in a car. On a very hot day, the car gets hotter when it is out in the parking lot. This is because the heat and light from the sun can get into the car, by going through the windows, but it can’t get back out.

This is what the greenhouse effect does to the earth. The heat and light can get through the atmosphere, but it can’t get out. As a result, the temperature rises.

What causes global warming?

Global warming is the end result of man for using up resources. There are many reasons why global warming occurs today. One of the major reasons is the consumption of too much energy. When you do not unplug appliances(example TV) before going to bed, this eats up more electricity, or cars running on gas or petrol. All of these activities require energy. To produce energy, we use up fossil fuels that are dug right from the ground.

Fossil fuels are produced from decaying plants and animals. When oil from fossil fuels is burned, it creates a dreadful odour that pollutes the air we breathe. Moreover the end results of used up fuels can also pollute our water. As energy is used up the chemicals emitted cause the Earth to behave similarly to a greenhouse, thus the term greenhouse gases.

What happens when there is global warming?

In global warming, excessive heat is trapped here on Earth, damaging crops and trees, and habitats of animals as well. A rise in the temperature in the ocean waters affect even the glaciers, and once these melt completely not only will the animals residing there lose their home, the melted ice caps can cover nearly more than half of the Earth’s terrain and population.

Polar caps are now said to be thawing more than five times faster than before.

How are we affected by global warming?

The consistent burning up of fossil fuels will bring environmental disasters and calamity to us all. Today most people do not care much about the environment, and continue to use up energy without any regard for their surroundings. We experience heat waves even during the cool months.

Droughts have been reported, and are widespread. Climate change causes hurricanes, leaving tens of thousands of people homeless, missing or dead. Global warming will cause more natural disasters. Example: Tsunami

Consequences:

How to conserve the Earth:

Class Task:

What is global warming? What causes global warming? What are the consequences? What can we do to conserve the

earth?

The Future you hope to have:

The Future is in your hands:

Sources: http://www.nrdc.org/globalwarming/ http://library.thinkquest.org/CR0215471/global_warming.htm http://sciencewithme.com/learn-about-global-warming/ http://www.disinfo.com/tag/global-warming/ http://

youthvoices.net/discussion/global-warming-effect-world-0