Earth Science T3
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What are examples of greenhouse gases?
Carbon Monoxide (CO2), Clouds/Humidity, Methane, and CFC's (Chlorofluorocarbons)
How does deforestation play a role in global warming?
Tree's absorb CO2 from the air for Photosynthesis. Fewer trees equal higher CO2. Burning timber also releases CO2 into the atmosphere.
How is Nuclear power created?
Created by splitting uranium atoms (Fission)
What are a few pros to Nuclear power
Uranium is plentiful, no air pollution and also creates an enormous amount power.
What are a few cons to Nuclear power?
There is the risk of radiation leak, Spent uranium can be enriched to create plutonium for nuclear weapons, radioactive uranium waist can be reprocessed.
What are 5 renewable sources
- Solar Energy
- Air Quality
- (They all depend on the geographical area.)
What are 3 non-renewable resources?
- Soil: Weathering of rock is extremely slow
- Metals: Form from very slow geologic processes.
- Fossil Fuels: Coal, oil, natural gas
What's historically the most important energy source?
What is the most important fossil fuel today?
Info on Coal?
- Very abundant in the United States.
- The most polluting and dirty fossil fuel causing mercury, acid rain and contributes to global warming.
Info on Oil
- US is the worlds leading consumer of oil.
- 1/3 comes from within the United States
- 2/3 are imported from other countries
What are one of the largest contributors of CO2 into the Ozone?
Greenhouse gases like coal, oil and natural gases.
- Other greenhouse gases are
- >methane from landfills, swamps, cattle, rice paddies
What is the biggest effect on global warming on the earth?
- Sea level rise which are due to glaciers melting which causes more runoff into oceans.
- >Beaches & coastlines shrink
- >Small island nations completely disappear
- >Less "buffers space"
How are the temperatures in Antarctica effected by the global warming?
Temperatures increase by 4-7 degrees due to the loss of ice sheets and sea ice revealing dark colored ocean and earth which no longer deflects sun light but absorbs it causing a chain reaction warming up other ice. The more sunlight that is absorbed, the more heat that is created.
What was the purpose of the Kyoto Protocol and where was it first held?
It's purpose is to reduce CO2 emissions and it was first held in Japan.
Why doesn't the U.S. want to sign Kyoto?
America believes that signing the Kyoto would have to small of an effect on temp's considering the price that would have to go into. Furthermore the growing world population would make it impossible to stick with the guidelines of this treaty.
The physical environment where a species lives.
A biological community of interacting animals and their physical environment.
What are benefits of Biodiversity?
- Ecosystems are more resistant to stress & more resilience to recover from natural disasters or radical shocks to the environment.
- >It is a source of food and medicine.
- >provides a source of income like fish in the coral reef and timber from trees.
- >Provides ecological services (forest create oxygen)
What are some threats to Biodiversity?
On land: Habitat destruction by humans to create towns and farms esp in tropical rain forest
where most of the exotic animals live.
- In oceans: The reefs are the most bio diverse in the ocean.
- >The #1 cause of extinction is over fishing Whales, Chilean sea bass & sea turtles (coastal beach development, removes area of turtle nest).>Coral reef bleaching when the coral die because the water warms up to fast.
- >Dead Zones where the ocean water no longer has any oxygen because fertilizers from farms wash into the water and make algae levels explode which removes all the oxygen from the water.
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