Tuesday, July 6, 2010
reflection
Tuesday, April 20, 2010
Survey
Monday, April 12, 2010
term 2 week 4 reflection
1. What you know about your project product.
I know that our product would help stop global warming
2. What you think the direction your group should be taking.
I think my group is on the right track and should be close to completing the project soon
3. What you have learnt about the product.
I have learnt that global warming is affecting us in our daily lives
4. What you would be doing to improve on the product.
I would make sure my product is strong and durable and most importantly eco-friendly
reflection(edited)
Term 2 Week 4
reflection
Tuesday, April 6, 2010
Tuesday, March 2, 2010
Week 8
week 9
Monday, February 22, 2010
reflection
Tuesday, February 16, 2010
reflection 10 / 2 / 10
Wednesday, February 10, 2010
Reflection (9/2/10)
The greenhouse effect is caused by an atmosphere containing gases and emitting infrared radiation. However, the earth is currently suffering from greenhouse radiation, because human machinery has been producing a lot of atmospheric gases. The main four gases contributing to enhanced greenhouse radiation are water vapour(36-70%), carbon dioxide(9-26%), methane(4-9%) and the ozone(3-7%) gases.
When the sun shines on earth, about 50% of the heat energy is trapped by the atmosphere. The more humans contribute to greenhouse gases, the more heat is trapped. The more heat is trapped, the higher the average temperature of the earth. The higher the temperature of the earth, the easier the icebergs melt. And like in what was said last week, once the ice melts, the water level will increase, causing flash floods.
What humans mainly contribute to the greenhouse effect is the carbon dioxide gas. We all breathe in oxygen and give out carbon dioxide. Usually, trees performing photosynthesis will be able to counteract the carbon dioxide gases. However, with deforestation and the burning of fossil fuels, there are now less trees to counteract the increase in carbon dioxide. Fossil fuel burning only add on to the carbon dioxide. Carbon dioxide is an atmospheric gas, it will absorb and emit more and more thermal infrared. To help reduce the rate of the Earth's temperature increase, we can switch to more eco-friendly alternatives of lifestyle, like using less charcoal,fossil fuels and paper.
Saturday, February 6, 2010
Reflection
Wednesday, February 3, 2010
chung wen kai's reflection
Reflection 3/2/10
Tuesday, February 2, 2010
melting ice
Melting Ice
According to most research, over the past 100 years, there has been a half degree of temperature increase in the earth's average temperature. This may sound like nothing, but every degree has a adverse effect on our earth's temperature. The subject todays is melting polar caps.
Basically the polar ice float by displacing large amounts of water. However, with the increase in temperature, the ice are falling into the ocean and when the ice falls, it displaces a certain amount of water and increase the water height.
Though the ice caps are the seemingly most likely to melt, that is not true. Greenland is more a possibility. If it melts, it would add 7 metres to the sea level.
Scientists predict that by 2100, sea levels would rise by a max of 20 inches, and this would have a major impact on coastal cities.
info from: http://www.howstuffworks.com/question473.htm
Sunday, January 31, 2010
Week 2 reflection
Wednesday, January 27, 2010
Week 2 Reflection
Tuesday, January 26, 2010
Week 2 Reflection
Global warming technically speaks of the changing climate around us. It is caused by the greenhouse effect and that causes the world to warm up. Basically, the heat gets trapped by the carbon dioxide gases and only some heat gets reflected to space. The increase in cars which are powered by fuel also adds more carbon dioxide around the atmosphere, making the weather even hotter eventually.
The ozone layer is also depleting due to the increase in carbon dioxide. If the ozone is completely depleted, we could be facing extreme heat and ultraviolet rays from the sun, which from the radiation from the sunlight could kill us.
The increase in temperature around the globe will also melt the polar caps. Hence, water level in the seas would rise.This could cause flash floods and kill millions, especially those living in coastal areas.
Another factor contributing to global warming is the action of cutting down trees. Trees as we know, helps balance the percentage of carbon dioxide and oxygen in the atmosphere. With lesser trees, the efficiency of the trees balancing the percentage would be deeply affected.
We can help to save our world by re-using, re-cycling and reduce the need for materials. With everyones' help, we can help do our part in saving our world.
Original post by Chung Wen Kai, Edited by Ryan Chin