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Transcript of Global Warming
What is Global Warming?
How long has global warming been going on?
The earths climate has changed throughout history. Just in the last 650,000 years there have been seven cycles of glacial advance and retreat. With the abrupt end of the last ice age about 7,000 years ago marking the beginning of the modern climate era, and of human civilization.
How bad is global warming?
What is the theory of global warming?
Some global warming is good. But if extra greenhouse gases are made, the thermal blanket gets thicker and too much heat is kept in the earth's atmosphere. That's when global warming's bad.
They have a fundamentalistic belief that changes in the climate system are almost completely caused by changes in the composition of the gases in Earth's atmosphere. The theory they try to proove is called Catastrophic Anthropogenic Global Warming CAGW or in plain language catastrophic human caused global warming.
what is the cause of global warming?
Most climate scientists agree the main cause of the current global warming trend is human expansion of the "greenhouse effect” warming that result when the atmosphere traps heat radiating from Earth toward space. Certain gases in the atmosphere block heat from escaping.
I think that global warming is one of the biggest problems in the world that needs to be solved as soon as possible. Global warming is already having significant and harmful effects on our communities, our health, and our climate.
Why is global warming a problem?
Global warming is primarily a problem of too much carbon dioxide (CO2) in the atmosphere—which acts as a blanket, trapping heat and warming the planet. Certain waste management and agricultural practices aggravate the problem by releasing other potent global warming gases, such as methane and nitrous oxide.
What is the Greenhouse effect?
The greenhouse effect is a natural process that warms the Earth's surface. When the Sun's energy reaches the Earth's atmosphere, some of it is reflected back to space and the rest is absorbed and re-radiated by greenhouse gases. The absorbed energy warms the atmosphere and the surface of the Earth.