HSA 2007 Biology Item 13
- CID
- CID6b4a869e0d57ecd13c9360e0e9fa99a3
- itemNum
- 13
- initialLetter
- A
- itemType
- SR
- itemAnswerKey
- 2
- itemMaxScorePoints
- 1
- origNum
- x
Use the information below to answer the following question.
A student conducts an experiment at home to test the effect of different covers on the melting rate of ice. The student places identical ice cubes on separate trays of known mass. The student covers each tray as shown below.
The trays are placed on the same table. After ten minutes, the student removes the covers, discards the excess water, and calculates the mass of each ice cube.
Which of these is the dependent variable in the experiment?
- shape of each ice cube
- mass of each ice cube
- temperature of the ice cubes
- material covering the ice cubes