Question

1. a student predicts that similar ice cubes will melt faster in a microwave than in a pot on the stove. how should this hypothesis be tested? a. measure and compare the volume of the pot and the microwave. b. determine the volume of liquid water made by each ice cube. c. observe and record the time for each ice cube to completely change to a liquid. d. identify and record the temperature of each ice cube before each trial.

Explanation:

The hypothesis is about the speed of ice - cube melting in different heating sources. To test this, we need to measure the time it takes for the ice - cube to melt. Measuring the volume of the pot and microwave (A) is irrelevant to the melting speed. Determining the volume of liquid water (B) doesn't tell us about the melting time. Recording the initial temperature of the ice - cube (D) doesn't directly test the melting speed in different heating sources.

Answer:

C. Observe and record the time for each ice cube to completely change to a liquid.