Question
A science class is studying runoff. They want to know how much water runs off from different surfaces. They also want to find
out how much soil will settle out of the water. They set up the investigation shown to answer their questions.
Boxes are filled with soil. The
boxes are higher at one end
to allow water to run off.
A watering can is used to
pour a measured amount
of water into the boxes.
The science teacher suggests that the students add a tool to improve their investigation.
Which item would help students better understand how different surfaces affect the amount of runoff?
A. a magnifying glass to look at the runoff closely
• C. a measuring cup to catch and measure the runoff at the
bottom of each box
• B. a thermometer to take the temperature of the runoff
• D. a ruler to measure the size of the pieces of soil in the
runoff from each surface
Answer
C. a measuring cup to catch and measure the runoff at the bottom of each box.