Science Ch. 3 Key Terms

Front

Aluminum

Back

A soft metal that is the most abundant metal in the earth's crust.

Front

Aquifers

Back

Layer of sand, gravel, or bedrock that hold and move ground water.

Front

Condensation

Back

Water collects in the clouds and falls back to the earth.

Front

Contour Plowing

Back

A method used by farmers to help keep water from washing soil away on hills.

Front

Copper

Back

A red-orange metal used for old pennies and pipes--sturdy and doesn't rust.

Front

Crude Oil

Back

Petroleum or Unrefined oil that contains mixed products and impurities.

Front

Evaporation

Back

Water goes from a liquid into a gas and collects in the clouds.

Front

Fallow

Back

Land that farmers are letting rest and not planting.

Front

Fertilizer

Back

Chemicals added to the soil or plants that replenish lost nutrients in soil (like vitamins for plants).

Front

Fossil Fuels

Back

Fuels theorized to form when the remains of plants and animals were buried quickly: types are petroleum/crude oil, natural gas and coal.