Third Six Weeks Science Review

Humus can best be described as-

• soil mixed with salt.

• weathered rocks.

• decayed plants and animals.

• clay and particles of sand.

Soil is

• a mixture of small pieces of rock and decomposing plants and animals.

• to rot and break down into smaller parts.

• when forces on earth break rocks apart or wear rock away.

The weathering of rocks forms what?

• coal

• soil

• salt

• oil

Weathering is

• a mixture of small pieces of rock and decomposing plants and animals.

• when forces on earth break rocks apart or wear rock away.

• to rot and break down into smaller parts.

Rocks near the ocean are NOT weathered by

• fish pushing.

• salt water dissolving.

• sand rubbing.

• crashing waves.

Which of these does NOT cause weathering?

• wind

• water

• the sun

• ice

To rot and break down into smaller parts is

• soil.

• decompose.

• weathering.

Which of the following is NOT a component of soil?

• plant material

• sunlight

• weathered rock

• decomposed animals

Volcanic eruptions can do all of the following EXCEPT

• change landforms.

• build new roads.

• make cracks in the crust.

• create new land.

To eject lava, ash, and/or gases from within the Earth-

• volcano

• landslide

• earthquake

• erupt