Page 61 - ScienceStd4

Procedure

1. Place a plastic cup filled with water on the table.

2. Take the thermometer and immerse it in the water, holding
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it from above as shown in Figure 5.

Figure 5: Measuring water temperature

3. Read the temperature. Make sure you get help reading the
water temperature if needed. Record the temperature.

4. Place the cup of water in the freezer. Measure the
temperature of the water every 10 minutes. Continue
measuring the temperature until ice starts to form. Record

the observations.

5. Compare the temperature of the water in its solid state to
its liquid state.

Results

When the temperature of water drops to 0 °C (32 °F), the

water begins to freeze. Therefore, water freezes at a specific
temperature known as the freezing point. The freezing point,

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SCIENCE AND TECHNOLOGY STD 4.indd 54
SCIENCE AND TECHNOLOGY STD 4.indd 54 14/01/2025 18:38