M A S T E R P A G E
7. How did you control the following variables?
a. height or angle
Used a meter stick according to the table.
b. quantity of material
Filled the dish full each time.
c. amount of moisture
Measured 225 ml.
d. surface condition
Used only one type of sand.
e. other
8. How did you insure that only one variable was changed at a time?
We carefully observed and recorded after each change.
9. From your data, try to explain how earthquakes affect landslides in as much detail as possible.
An earthquake will cause a “slidable” piece of material to move a certain amount for each jolt.
10. How could you test your explanation?
Repeat the investigation. Compare our explanation to others. Look into real landslide data.
11. What was interesting or unexpected in the investigation? Why?
The addition of water did not lower the angle required for the sand to slide.
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