Texas Science Unit 6: Lesson 1 Flashcard

Front

What is soil made of?

Back

Soil is made of tiny rocks, humus, and other materials.

Front

What is the smallest rock piece found in soil?

Back

The smallest rock piece found in soil is clay.

Front

Why is water in the soil important?

Back

Water in the soil is important because plants use it to grow.

Front

Which of these helps weather rocks?

Back

Rain and rushing water help weather rocks.

Front

What happens to water when it freezes inside a cracked rock?

Back

When water freezes inside a cracked rock, the ice helps split the rock apart.

Front

What is humus?

Back

Humus is the dark, organic material in soil that is formed from decayed plants and animals.

Front

What role do worms play in soil?

Back

Worms help aerate the soil and break down organic matter, enriching the soil.

Front

What is the process of weathering?

Back

Weathering is the breaking down of rocks into smaller pieces by natural forces.

Front

How does sunlight affect soil?

Back

Sunlight helps warm the soil, which can affect plant growth.

Front

What is erosion?

Back

Erosion is the process by which soil and rock are removed from one location and transported to another.