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Ch.4 E.resources
Prentice Hall Earth Science
Question | Answer |
---|---|
How long does it take for a renewable resource to be replenished? | A short amount of time, such as months, years, or decades. |
What is a nonrenewable resource? | A nonrenewable resource is a resource that takes millions of years to form and accumulate. |
What are examples of fossil fuel? | Coal, Oil, and natural gas. |
What is a good alternative for low oil supplies? | Tar Sands and Oil Shales. |
What is Tar Sands? | Tar sands are usually mixtures of clay and sand combined with water and varying amounts of a black, thick tar called bitumen. |
What is Oil Shale? | Oil Shale is a rock that contains a waxy mixture of hydrocarbons called kerogen. |
How does Coal form? | Coal forms when heat and pressure transform plant material over millions of years. |
How does Petroleum and Natural Gas form? | Petroleum(oil) and natural gas form from the remains of plants and animals that were buried in ancient seas. |
What are the two advantages of solar energy? | The two advantages of solar energy is the fuel is free and it's non-polluting. |
In Nuclear Fission, what happens to the nuclei of uranium-235? | Uranium-235 is bombarded with neutrons which cause the uranium nuclei to then split into smaller nuclei and emit neutrons and heat energy. |
In the next 50 to 60 years, wind power will make what percentage of the countrys demand for electricity | 5 to 10 percent. |
What is Hydroelectric power? | Power generated from falling water turning turbines. |
How is Geothermal Energy harnessed? | Geothermal energy is harnessed by tapping natural and underground reservoirs of steam and hot water. |
How is Tidal Power harnessed? | Tidal Power is harnessed by constructing a dam across the mouth of a bay or an estuary in coastal areas with a large tidal range. |
What is Point Source pollution? | Point source pollution is pollution that comes from a known and specific location. |
What is Nonpoint source pollution? | Nonpoint source pollution is pollution that does not have a specific point of origin. |
What is Runoff? | Runoff is water that flows over the land rather than seeping into the ground, often carries nonpoint source pollution. |
What helps maintain life on Earth? | The chemical composition of the atmosphere helps maintain life on Earth. |
What air pollution law did Congress pass in 1970? | In 1970, Congress passed the Clean Air Act, the nation's most important air pollution law. |
What is Compost? | Compost is partly decomposed organic material that is used as fertilizers on some fields. |
What is recycling? | Recycling is the collecting and processing of used items so they can be made into new products. |