Clara tests a hypothesis that the heavier of the two materials will insulate cold drinks better than the lighter-weight material. She
adds equal volumes of the same cold beverage to two cups. One cup is made of lightweight plastic foam, and the other cup is
made of a heavier, ceramic material. She records her results in a chart.
Material
plastic
foam
ceramic
How are these experimental results valuable to Clara?
Time for beverage to warm
to room temperature
(hours)
3.25
2.50
A The results can be communicated with others through newspapers, magazines, and the Internet to increase the validity of her results
B The results explain why the materials perform differently
C Clara can use the results to form a new hypothesis and plan a new experiment
D Clara can use a different heavier material to see if she obtains different results