Long Soil and Erosion

What is soil?

• A mixture of minerals
• A mixture of water, weathered rock, air, and organic matter
• A type of rock
• A type of bacteria

Why is soil important to plants?

• Plants extract water from the soil
• Plants extract nutrients from the soil
• Plants anchor themselves in the soil
• All of the above

How can you tell soil type?

• By the color
• By the particle size
• By the texture
• By the weight

Which of the three soil types that we examined is the best for growing plants?

• Loam
• Sand
• Clay

Where might you find sandy soil?

• prairie
• desert
• forest
• mountain

The process by which small pieces of rocks and soil are carried away to new locations is called...

• deposition
• erosion
• weathering
• faults

How does freezing water cause the weathering of rocks?  The freezing water—

• keeps the rocks in place
• makes the rocks last longer
• expands cracks and breaks rocks
• causes rocks to fall in landslides

What was sand before it was broken down?

• soil
• rock
• water
• cement

What caused this canyon to form over many years?

• Moving Water
• Ice
• Sand Dunes
• Plants

Sand dunes form....

• when wind blown sand builds up in one place
• when water is deposited at the mouth of a river
• when ice gets into the cracks of rocks
• when plants grow through sidewalks