1) Give one word equation on how carbon dioxide is added to the atmosphere.
2) Explain why the increase in concentration of carbon dioxide is a major environmental concern.
3) Explain why methane is a greenhouse gas of greater impact than carbon dioxide.
1) Oxygen + Glucose ---------> Carbon Dioxide + Water Vapour + Energy
ReplyDeleteWord equation for respiration.
2) The increase of carbon dioxide is a major environmental concern as carbon dioxide is a green house gas which traps heat. This will lead to a rise in Earth's average temperature, and this could in turn lead to many environmental changes. For example, the rise in temperature could lead to a speeding up of the melting of glaciers and ice at both the North and South pole. This could in turn lead to a lose of natural habitats for Arctic and Antarctica animals such as seals, polar bears and penguins. The lost of habitat for these animals will mean tat these animals do not have a proper place to recuperate and rest. As such, many may die from exhaustion and eventually, lead to the endangerment of such animals.
Next, with heat trap on Earth by carbon dioxide and causing a rise in the temperature, this would melt ice and glaciers at the poles, causing a rise in sea level. This could potentially threaten low-lying countries, such as Singapore and the Netherlands from massive and destructive flooding. This could lead to a loss of home and lives as people are swept away by the strong waves and currents. Flooding would also cause the growing of crops to be affected as the fields are flooded with too much water for the growing of crops. This could economically lead to a steep demand for food and also a rise in the price for food.
Lastly, the rise in Earth temperature due to carbon dioxide trapping heat by also indirectly deplete our natural resources, as many people would resort to air-conditioners in an attempt to cool themselves down. This would instead use up a large amount of electricity and would cause more fossil fuels to be burned to supply the amount of electricity needed. This would cause of natural resources to be used up more quickly.
3) Methane is greenhouse gas with a greater impact than carbon dioxide as it has a high 'global warming potential' that ranks it worst amongst the greenhouse gases. It has a 'global warming potential' 21 times that of carbon dioxide, meaning that it traps more heat than carbon dioxide. However, methane is actually 33 times more damaging to the environment than carbon dioxide if the effects of interaction with other airborne pollutants is included. This means that methane actually traps 33 times more heat than carbon dioxide, speeding up the rise in temperature on Earth.
By: Group 4 (Duncan, Zhi Yuan, Joe, Ngai Chun)
1) One word equation for Respiration
ReplyDeleteGlucose + Oxygen → Carbon Dioxide + Water + Energy
2) Carbon Dioxide is known as greenhouse gas. It allow visible light into the atmosphere, but prevent heat radiation in the form of infrared light from escaping. This produces a warming effect, called the greenhouse effect. The most significant greenhouse gas is carbon dioxide The levels of carbon dioxide in the atmosphere are increasing due to burning of fossil fuels. The greater the concentration of carbon dioxide, the larger is the amount of heat trapped. As a result, the Earth's average temperature increases, create a phenomenon called global warming.
There are many possible consequences of global warming which include the following. For instance, Rising sea level caused by the melting of glaciers and ice caps, which in turn cause flooding of low-lying land. The rapid evaporation of water from the Earth's surface, when this happens, carbon dioxide dissolved in the oceans will be driven out into the atmosphere. With these consequences, carbon dioxide is said to be a major environmental concern.
3) Although methane has a short lifetime in the atmosphere compared to carbon dioxide, methane is much more efficient at trapping infrared radiation than carbon dioxide. Since methane is a greenhouse gas that is able to trap larger amount of heat than carbon dioxide, as time passes, methane will have a greater impact on climate change, approximately 20 times greater than carbon dioxide over a hundred year period.
Done By : Group 5 (Htoo, Qianhong, Jieling, Wang Yu)