Show:
Soil
Weathering
Erosion
Plants
Miscellaneous
100
The bottom layer of soil.
What is bedrock?
100
This is the type of weathering that occurs when water gets behind rocks when it is cold and cracks the rock.
What is freezing or ice?
100
This can help stop erosion.
What is a fence, retaining wall or plants?
100
Plants can help to stop this.
What is erosion?
100
This type of soil feels gritty.
What is sand?
200
This is what makes the topsoil dark.
What are decomposing things?
200
Soil is formed after this takes place for a long period of time.
What is weathering?
200
Name one way erosion occurs.
What is...answers will vary.
200
If a plant is dying in soil what might it be lacking?
What are nutrients?
200
This type of soil feels "silky."
What is silt?
300
The middle portion of soil.
What is subsoil?
300

The Grand Canyon and other canyons were formed from this type of weathering over a long period of time.

What is weathering by water?

300

Name an example of erosion.

What is...answers will vary.

300
Plants and trees are good for our environment, name one reason why.
They control erosion, they create oxygen and make our world nice.
300
This soil type clumps up and holds water really well.
What is clay?
400
The uppermost portion of soil that contains decomposing organisms.
What is topsoil?
400

Name 2 types of physical weathering.

What is... 

1. Wind

2. Water/rain

3. Heat/Cold

4. Pressure

400
Does erosion occur quickly or slowly?
What is slowly?
400

Can plants grow without soil?

Yes

400
This type of soil dries quickest because it doesn't hold water well.
What is sand?
500
The layer of soil containing mostly clay and roots.
What is subsoil?
500

How many types of physical weathering are there?

What is 4.

500
Define erosion.
What is the movement of weathered materials?
500
A cactus will grow best in this type of soil.

What is sandy?

500
What forms soil?
What is weathering of a rock?