Science Exam II term

How long does it take for soil to form?

• Over one thousand years.

• A year

• one hundred years

• 6 moths

What percentage of soil is taken up by air?

• 20-30%

• 25 %

• 50%

• 40%

The primary layer where plants and organisms live.

• Subsoil

• Topsoil

• Organic laye

• Bedrock

Process where something is gradually lost by water, wind or other agents.

• Erosion

• Cobalt

• Agriculture

• Consistency

The science of farming

• Erosion

• Cobalt

• Agriculture

• Consistency

Types of rocks

•Sedimentary rocks have a crumbly look.

• True

• False

Types of rocks

•Volcanic rocks are metamorphic rocks .

• True

• False

Types of rocks

•There are two different types of rocks

• True

• False

Types of rocks

• Rocks do not contain organic compounds.

• True

• False

Types of rocks

•Cementation is when all the air and water go out of the rocks

• True

• False