Thermometer Usage and Observations

The video tutorial demonstrates how to use a laboratory thermometer through a simple activity. It involves placing a thermometer in hot and cold water to observe changes in mercury levels. The activity shows that the mercury level rises in hot water and falls in cold water, indicating the temperature. This helps learners understand how a thermometer measures temperature by reaching a constant mercury level.

What is the first step in the activity involving a laboratory thermometer?

• Place the thermometer in hot water.

• Fill two beakers with hot and cold water.

• Record the final mercury level.

• Shake the thermometer vigorously.

What should you do after observing the initial mercury level in the thermometer?

• Shake the thermometer.

• Record the room temperature.

• Place the thermometer in cold water.

• Place the thermometer in hot water.

What happens to the mercury level when the thermometer is placed in hot water?

• It fluctuates.

• It rises.

• It decreases.

• It remains constant.

After removing the thermometer from hot water, where should it be placed next?

• In cold water.

• In direct sunlight.

• In a freezer.

• In a warm room.

What is observed when the thermometer is placed in cold water?

• The mercury level remains the same.

• The mercury level decreases.

• The mercury level rises.

• The mercury level fluctuates.

What does the final mercury level in the thermometer indicate?

• The boiling point of water.

• The initial temperature of the water.

• The temperature at which mercury stabilizes.

• The average temperature of the room.