YOU WILL NEED:

a clear plastic cup

water

a stopwatch or a timer

DIRECTIONS:

1. Fill the cup halfway up with water

2. Predict how many minutes it will take the water to freeze

3. Place the cup of water in your freezer and use your stopwatch to time exactly how many minutes it takes for the water to freeze

4. Once it is completely frozen, take the cup out of the freezer

5. Predict how many minutes it will take the ice to melt

6. Use your stopwatch to time exactly how many minutes it takes for the ice to melt

7. Which took longer … freezing or melting?