Describe two ways in which gravity has a part in the life-cycle of a star- Gravity pulls the dust and gas in the nubula together, and compresses them so much that the inside becomes hot enough for fusion reactions to start. Gravity also pulls the remains of a red giant together after fusion reactions have stops. This forms a white dwarf. Theories about the universe- 1. What does red shift tell s about distant galaxies?
These industrial activities have raised atmospheric gases such as carbon dioxide which contribute to greenhouse gases. The extra amount of these gases mean there is a thicker layer, meaning the gases absorb outgoing long-wave radiation which traps in too much heat. Increasing amounts of CO₂, methane, nitrous oxide, water vapour and ozone all contribute to this. The main cause in this rise is the burning of fossil fuels such as coal, oil, natural gas and petrol. Since the industrial revolution the levels of atmospheric CO₂ have increased from 280 parts per million to 380ppm for the past 10,000.
Chapter 14 1. Radio galaxies have sources of unusually strong radio waves emitted on either side of the galaxy and active galaxies are spirals with small, highly luminous cores like Seyfert galaxies, they also have nuclei that are produced by matter plunging into super-massive black holes. 6. By observing the velocity of the stars that orbit the black hole or by the rotational speed of its accretion disk. 10.
They changed because the molecules of hydrogen and helium were moving so fast that they eventually escaped the Earth. 14. Explain how the greenhouse effect works and how it relates to global warming. The greenhouse effect is when radiation at visible wavelengths passes freely through the atmosphere and is absorbed at the ground. The ground heats up and emits infrared radiation.
The Globe is losing its Cool Global Warming Melissa Moran University of Phoenix Axia collage Professors name SCI 275 October 21, 2009 There are many reasons for the change in the climate. Climate change also known as global warming is the change in the average temperature of the earth surface, and the change in wind and precipitation. Global warming is caused by releasing fossil fuels into the atmosphere. Many factors such as human activity and greenhouse gas emissions contribute to global warming. Global warming also has natural causes though they are often down-played in the media.
Global Warming By Amanda Lardino Sci 275 What are the main causes of global warming? Is there things we can do to prevent it? Those are two of the main questions that have come to mind about the way to focus our thoughts on what can be done to decrease this issue in the world today. One of the major atmospheric issues that has been destroying the environment for years is global warming. I have read that in the present compared to the past global warming has increased tremendously.
June Avant English 101 November 22, 2010 Global Warming Controversy Global warming is an increase in the average temperature of the earth’s atmosphere which causes climatic changes. Global warming leads to changes in rainfall patterns, sea level, negative impacts on plants, wildlife, and humans. Al Gore and Daniel Botkin both have great points about global warming. Botkin has a scientific perspective about global warming; however, Gore’s position is better. Al Gore uses facts and evidence to support his views about global warming.
Global Warming Louis Clemens HUM/111 11/20/2011 Katie Newbanks Global warming has become a major concern over the last century. The world is much hotter now than the past. Many reasons are to blame for this global temperature increase such as fossil fuels releasing C02 emissions. C02 emissions are released from coal, oil, and natural gas burning. Coal, natural gas, and oil are burned for energy in many ways such as cars and power plants.
We then, can assume the reason for the increasing temperature was resulted from industries, over-powering energy with coal during that specified time period. Manufacturing produces massive amounts of carbon dioxide along with other greenhouse gases, resulting in warming the whole planet, hene causes climate changes. Thus, it can be concluded that humans have a strong correlation with the increasing temperature and climate changes that are happening
With the burning of extremely harmful greenhouse gases, we could stand to solve this problem by doing what we already do to pollute our own planet, just in a much more helpful scale. The dust storms that plague the surface of Mars are another topic to consider. While a storm is usually just a temporary headache, dust storms on Mars are quite common and strong, and further limit solar power to the surface. The largest of these storms can cover much of the entire surface of the planet and commonly last for months at a time. With habitation, this could also be lessened, but constantly having buildings and equipment destroyed would be something that would have to be addressed properly and some sort of working solution be implemented before any sort of progress could