Movement of a Thermometer

The video tutorial explains how thermometers work, focusing on mercury thermometers. It describes the scientific method and guides viewers through an experiment to observe how mercury reacts to different water temperatures. The experiment involves using a thermometer to measure temperatures in various water conditions, demonstrating the principles of heat energy and expansion. Observations show the correlation between water temperature and mercury movement, reinforcing the concept of temperature measurement.

What is the primary function of a thermometer?

• To measure the weight of an object

• To measure the temperature of a substance

• To measure the speed of an object

• To measure the volume of a liquid

Why is mercury used in thermometers?

• Because it is cheaper than other liquids

• Because it expands and contracts with temperature changes

• Because it changes color with temperature

• Because it is a solid at room temperature

What is the first step in setting up the experiment?

• Filling the cups with water

• Labeling the cups with different water types

• Heating the water in the microwave

• Placing the thermometer in the water

What should you observe when the thermometer is placed in hot tap water?

• The mercury will freeze

• The mercury will rise

• The mercury will stay the same

• The mercury will fall

What happens to the mercury when placed in cold water after being in hot water?

• It drops to a new low

• It evaporates

• It stays at the same level

• It rises further