Students will use a stream table to investigate the ability of water to transport materials, as shown in the diagram. Students' Question: How does the slope of a stream affect the transportation of pebbles?
Plan:
1. Place pebbles at the top of a stream table.
2. Pour water into the stream table and observe the pebbles.
3. Repeat 3 times.
4. Change the height of the brick under the table.
5. Repeat this procedure at various heights.
Select the two variables students must keep constant throughout the entire investigation.
O A amount of water
Ic number of pebbles placed at the top of the stream table
D. number of pebbles that flow to the bottom of the stream
table
B. angle of the stream table