2. Essential Questions
What is soil?
How is soil made?

3. What is soil?
Soil is the loose material that covers much of the Earth’s surface.

4. What is soil made of? Soil Recipe Card Bits of weathered rock
Bits of minerals
Material that was part of once living things.

5. What is weathering? Weathered Rock Soil is made of weathered rock.
Weathering is the breaking down of rock into smaller pieces.
It takes thousands of years to form soil.

6. How does soil get washed away?
Soil gets washed away when rainwater runs down a hill.

7. Quick Review
What is soil?
What is soil made of?

8. What are the three types of soil?
Essential Questions
What are the three types of soil?

9. What are the three types of soil?
sand
clay
loam

10. There are three types of soil: sandy soil, loam, and clay soil.
The types of soil are classified by the type of rock bits they contain.

11. Sandy Soil
Sand contains looser and larger particles, allowing water to pass through it quickly. Sand has the largest particle size.
*this means the bits of weathered rock that make it up are the largest.
Water passes through sand like a strainer.
Sand particles feel hard.

12. Clay contains smaller, more tightly packed particles!
Clay Soil
Clay contains smaller, more tightly packed particles!
*this means the bits of weathered rock that make it up are VERY small.
Water passes very slowly through clay because the particles are very small. Clay acts like a sponge that soaks of water
A tree would not survive in clay because it soaks up water like a sponge – Would the tree receive any water?

13. What happens when the three types of soil mix?
Loam is a mix of sand, silt, and clay.
Potting soil is an example of loam.
Plants grow really well in loam!

14. Quick Review What are the three types of soil?
Which type of soil has the largest and smallest particle size?
What happens when the three types of soil mix together?