SME
Grade 4 Science · Problem type
Water poured and sand moved
Use this for “Does more water carry the sand farther down the tray?”
Record and look
5
10
20
30
40
1 cup
2 cups
3 cups
4 cups
5 cups
1 cup
2 cups
3 cups
4 cups
5 cups
Sand moved (cm)
5
10
20
30
40
More water moved the sand farther: from 5 cm to 40 cm.
More water means more erosion.
Tap a bar at the height you want.
Assumptions
•
Pour water down a tray of sand, one cup more each time.
•
Measure how far down the tray the sand moved.
•
Moving water carries sand away: that is erosion.
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