Review for Friday 2/7

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

• How much it would cost.

• The store it was bought from

• How old it is

• What type of rock it came from

One component of soil is decayed plant and animal remains, but the major component of soil is

• fossil fuels

• weathered rock

• plastic

• saltwater

All of the following are plant remains EXCEPT

• dead leaves

• dried sticks

• sand

• seeds

Plants and animals become part of soil when they

• die and decompose

• produce offspring

• grow and develop

• take in nutrients

Soil is composed of all these materials EXCEPT

• weathered rock

• plants

• plastic

• animal remains

Cause: Rain beats against rock and wind batters the rocks

• Effect: The rocks break down into small pieces which form soil.

• Effect: The rocks stick together to form larger rocks.

• Effect: The rain and the wind cannot affect the rocks.

• Effect: Flowers grow out of the rocks.

Congruent means the same size or equal.

• True
• False

How do plants contribute to the formation of soil? Plants

• Cover the soil and shade it from the sunlight

• Die, decompose and become part of the soil

• Use soil to grow and develop over time

• Support the animal life in the soil

The organic matter in soil comes from plants. Which of the following locations would most likely produce soil with the greatest amount of organic matter?

• A desert with very high temperatures

• A prairie with lots of grasses and flowers

• A mountain with extremely cold winds

• A river with quickly moving water

A fraction is a number that DOES NOT represent part of a whole.

• True
• False