Global Warming Essay Research Paper Introduction Global

Global Warming Essay, Research Paper

Introduction:

Global warming is a term that describes the “green house” effect-that is rise in temperature of the earth. The earth’s climate is predicted to change because activities are altering the chemical composition of through the building up of green house gases-primarilyCO2, CH3, N2O and chlorofluorocarbon. These green house gases trap energy from the sun and heat would not escape back in to space. Thus, they warm our world. But problem is arising because the atmospheric concentration of green house gases increases.

So the temperature of the earth gradually increases.

Rational:

Global means surface temperature have increased 0.5 – 1|f, since the late 19th century. 1998 was the warmest year on record. Snow cover in the northern hemisphere and floating ice in the Arctic Ocean has decreased. The frequency of extreme rainfall events has increased through out much of the U.S. Scientist expects that average global surface temperature could rise 1.6 – 6.3|f by 2100. Global warming could possibly cause the health related problems for example, an increase in the incidence of skin cancer duo to increased amounts of UV rays, an increase in deaths due to respiratory, cardiovascular and cerebrovascular disease, all of which tend to increase proportionately with temperature. I believe that it is more concerning with our daily life. So I chose this topic.

Results: Global Warming

Green house gases: CO2, CH3, N2O and chlorofluorocarbons.

Causes: deforestation, human activities, industrial revolution, increased agriculture. All contribute to emission of green house gases.

Mechanism: if the photon of the right wavelength in the IR spectrum is reflected from the surface of the earth and strikes a molecule of one of the green house gases, it will cause the energy level of the valance electron shell to increase and the molecule will begin to vibrate until it returns to the ground state and the heat is returned to the surface of the Earth.

Source: