Sunday, November 14, 2010

Science Review - Weather, Climate, Natural Resources, Alternative Resources

Information from the Powerpoint in Class:

Weather
generally refers to day-to-day temperature, precipitation activity, etc.

Weather includes sunshine, rain, cloud cover, winds, hail, snow, sleet, freezing rain, flooding, blizzards, ice storms, thunderstorms, steady rains from a cold front or warm front, excessive heat, heat waves and more.

Climate
the description of the long-term average pattern of weather in a particular area.

Some scientists define climate as the average weather for a particular region and time period, usually taken over 30-years.


Earth’s Materials
Smaller rocks particles come from the breakage and weathering of bedrock and larger rocks.

Weathered rock, and plant and animal remains form soil.

Natural Resources
materials that are found in nature such as fossil fuels, rocks, soil, water, and gases of the atmosphere as well as living organisms such as plants and animals.

We can classify natural resources as renewable or nonrenewable resources.

Renewable Resources - take a short time to be replaced.
Plants, Animals, Fresh water - (Also known as Inexhaustible Resource),
Air (Also known as Inexhaustible Resource)


Non-Renewable Resource -take millions of years to be replaced.
Examples: fossil fuels, minerals

Fossil Fuels - take a long time to form.
a natural resource that has formed in the earth from the remains of plants or animals that lived as long as 400 million years ago.

Coal is an example of a fossil fuel; Coal is formed from a combination of plant material, heat, pressure, and time. The process of coal formation takes millions of years to complete and is still taking place today.

Alternative Energy -energy derived from sources that do not use up natural resources or harm the environment.
Examples:
Solar energy; Wind energy; Hydroelectric energy (energy of moving water);
Geothermal heat energy (“geo” means Earth) (“thermal” means Heat)
Biofuels (energy derived from animal and plant material)

Read online more information about Renewable Resources








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