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.
The chromosphere is the layer above the visible photosphere. 2. Solar energy passes through this region on its way out from the centre of the Sun. The temperature of this layer ranges between 6 000 ̊C and 20 000 ̊C. 3.
At constructive boundaries where plates are moving apart from one another, basaltic lava is erupted between the gaps. This type of lava is not very viscous due to its low silica content. This is because no subduction of crust is involved so the lava is not made of melted lithosphere but has risen from the mantle itself. The low viscosity of this lava causes it to flow very far before cooling and solidifying. This forms shield volcanoes with very gentle slopes and a much wider base than more conical shaped volcanoes involved with convergent plate margins.
limb_flare_sm.jpg (5710 bytes)Solar flares are tremendous explosions on the surface of the Sun. In a matter of just a few minutes they heat material to many millions of degrees and release as much energy as a billion megatons of TNT. They occur near sunspots, usually along the dividing line (neutral line) between areas of oppositely directed magnetic fields. The biological effect. There is a growing body of evidence that changes in the geomagnetic field affect biological systems.
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.
At destructive plate margins, the oceanic plate goes under the continental plate due to it’s more dense, which is a process known as subduction. The oceanic plate moves down into the mantle entre the benioff zone where it’s melted and destroyed because a pool of magma formed. The magma then rises through the cracks in the crust called vents and it erupts on the surface forming a volcano. There are also different types of volcano for examples composite volcanoes, shield volcanoes and dome volcanoes. For constructive plate margins, the magma rises up into the gap that created by the plate move apart to form a volcano.
'The extent to which volcanic processes represent hazards depends on where and when they occur.' Discuss this statement. Volcanic processes become a hazard when they impact upon the human and built environments, killing and injuring people, burying and collapsing buildings, destroying infrastructure and bringing agricultural activities to a halt. Volcanic hazards are influenced by several factors including location, time and frequency of eruptions, and the materials ejected. It is the viscosity of magma that largely determines the nature and power of an eruption and the resultant severity of the hazard.
Carbon dioxide is a heat trapping greenhouse gas. It gets “released through human activities such as deforestation and burning fossil fuels, as well as natural processes such as respiration and volcanic eruptions” (Global Climate Change: Key Indicators, 2014). An increase in carbon dioxide means more heat is trapped thereby raising the Earth’s temperature. Global surface temperature needs to also be monitored. Not just one area but globally!
I have read that in the present compared to the past global warming has increased tremendously. The causes and effects of global warming has been the top of discussion in debates not just between scientist but politicians, businesses and common members of the community. Global warming is defined as a measurable increase in temperature of Earth’s