• Introduction
• Task

Tasks

Complete the activity below. Submit the Lab Response Sheet to the Unit 3 Erosion Lab Dropbox.

Materials

• Two paper cups
• Water
• Small aluminum pan or bowl
• water
• sand

Sand Plain

1. Fill the small bowl with sand.
2. Smooth the sand flat so it fills the whole pan to form a "plain".
3. Use a toothpick to make 10 small holes is the bottom of one paper cup.
4. Fill the second cup with water.
5. Hold the cup with holes 12 inches above the "plain".
6. Gently pour the water from the second cup into the cup with holes.
7. Watch what happens and record the observation on the worksheet.

Sand Mountain without Grass

1. Fill the small bowl with sand.
2. Shape a pile of sand into a "mountain".
3. Re-use the paper cup with holes.
4. Fill the second cup with water.
5. Hold the cup with holes 12 inches above the center of the "mountain".
6. Gently pour the water from the second cup into the cup with holes.
7. Watch what happens and record the observations on the worksheet.

Sand Mountain with Grass

1. Fill the small bowl with sand.
2. Shape a pile of sand into a "mountain".
3. Pretend to grow grass all over "mountain" by covering it with a tissue.
4. Pat the tissue down lightly so that it is touching the sand everywhere.
5. Re-use the paper cup with holes.
6. Fill the second cup with water.
7. Hold the cup with holes 12 inches above the center of the "mountain".
8. Gently pour the water from the second cup into the cup with holes.
9. Watch what happens and record the observations on the worksheet.