Temperature Concepts and Thermometer Functionality

The video tutorial introduces the concept of measuring temperature using mercury, a liquid that expands and contracts with temperature changes. It explains how mercury thermometers are used to measure body temperature, particularly during fever. The tutorial includes a dream sequence where different temperature scenarios are illustrated, such as room temperature and human body temperature. Finally, it demonstrates how a fan can help reduce temperature when it's too hot.

What is the primary reason mercury is used in thermometers?

• It is colorful.

• It is a solid at room temperature.

• It expands and contracts quickly with temperature changes.

• It is inexpensive.

What happens to mercury in a thermometer when the body temperature rises?

• It contracts.

• It evaporates.

• It expands.

• It changes color.

In the dream sequence, what is the temperature referred to as room temperature?

• 10°

• 20°

• 30°

• 40°

What is the normal temperature of the human body as mentioned in the dream?

• 37°

• 38°

• 36°

• 35°

What temperature is considered hot in the dream sequence?

• 20°

• 30°

• 40°

• 50°

What is the effect of using a fan as discussed in the final section?

• It has no effect on temperature.

• It increases the temperature.

• It maintains the temperature.

• It brings the temperature down.