Review for Science CCA #1

How would the soil be different in an area that gets very little rainfall? The soil would contain –

• much smaller pieces of rock.
• many insects and worms.
• a greater variety of plants.
• less water and organic matter.

• Weathering of earth materials
• Decay of plant matter
• Formation of various minerals
• Mixing of water and air

How do plants contribute to the formation of soil? Plants -

• cover the soil and shade it from sunlight.
• die, decompose and become part of the soil (humus).
• use soil to grow and develop over time.
• support the animal life in the soil.

• A
• B
• C
• D

• Large area of level land
• Rough, jagged slopes
• Short and rounded on top
• Surrounded by higher land

• Hill
• Plain
• Valley
• Mountain

Lava from a volcanic eruption can change the Earth’s surface by -

• Destroying trees
• Burning down buildings
• Creating new land
• All of the above

• Earthquake
• Landslide
• Volcano
• River

Rocks, loose soil and sand rapidly sliding down a slope are a change to the surface of the earth known as a -

• Delta
• Volcano
• Landslide
• Glacier

How would the soil be different in an area that gets very little rainfall? The soil would contain –

• much smaller pieces of rock.
• many insects and worms.
• a greater variety of plants.
• less water and organic matter.