Embedded Files
Supplies
Supplies
- soil
- sand
- grass
- buckets
- water
- dixie cups
- trays (for each student or group)
Instructions
Instructions
Preparation: Mix one bucket of soil and one bucket of sand with enough water to make them damp. Mix a third bucket with soil water and grass.
Preparation: Mix one bucket of soil and one bucket of sand with enough water to make them damp. Mix a third bucket with soil water and grass.
- Fill a Dixie cup with wet sand and form a little sand castle on the tray
- Repeat with soil and with the soil and grass (forming two more cakes)
- You can now let the cakes dry or continue with them damp
- Fill a Dixie cup with water and gently pour over each of the cakes
- Observe
Points to Emphasize and Discuss
Points to Emphasize and Discuss
- What is soil erosion?
- Which cakes had the most erosion? Which had the least?
- Why do you think some eroded more than others?
- What are some other causes of soil erosion?
- What increases soil erosion?
- What are some environmental issues around soil erosion?
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