Primary 4 Science — Energy Practice | Standard

Standard Science Primary 4 Energy

When using a laboratory thermometer to measure the temperature of water, which of the following is the correct practice?

A Ensure your eye level is at the top of the liquid column.

B Read the thermometer after removing it from the water.

C Stir the water vigorously with the thermometer.

D The bulb should touch the bottom of the beaker.

Show Worked Solution

Step 1: Reading must be taken with the bulb immersed. Step [2-9]: To avoid parallax error, eyes must be level with the meniscus.

Correct answer: Ensure your eye level is at the top of the liquid column.

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