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Ch.4 E.resources

Prentice Hall Earth Science

QuestionAnswer
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.
Created by: Chandlar