Soil Review

What is it called when plants and animals die and break down?

• weathering

• nutrients

• decompositon

• erosion

What is it called when rocks are broken down into smaller pieces?

• weathering

• nutrients

• decompositon

• erosion

What uses nutrients in the soil to grow?

• trees

• weathering

• decompose

• plant matter

Why are dead plants and animals important to soil?

• they make it slimy

• they are not good for the soil

• They are full of nutrients

• They make the soil stick together

The weathering of rocks into small pieces creates what?

• minerals

• water

• coal

• soil

How would the soil be different in a place that doesn't get much rain?

• much smaller pieces of rock

• many insects and worms

• a greater variety of plants

• less water and organic matter

What could you add to your soil to help plants grow better?

• Empty soda bottles

• Nutrients from dead leaves and earthworms

• Large rocks and pebbles

• Small pieces of sand and clay

Soil is composed of all of these natural things except:

• weathered rock

• plant matter

• plastic pieces

• animal remains

Rocks near the ocean get broken into smaller pieces. What causes this change to these rocks?

• Water crashing against the rocks

• Leaves falling from trees

• Salt dissolving in the water

• Clouds forming in the sky

What is something you might be able to tell about soil from looking at it?

• How much it would cost

• How much nutrients it has

• How old it is

• How much you would need to fill up a flower pot