Question

3. In what direction does heat travel through the soup?
A. from top to bottom
B. from bottom to top
C. from side to side
D. from top to down

4. Which of the following explains why the lady is able to hold the handle of the pan with her bare hands?
A. The handle is made of good insulator of heat.
B. The handle has thermal conductivity.
C. The handle has high thermal expansion.
D. The handle is made of aluminum

5. What happens to the water in the pan when heated? A. It remains the same.
B. It increases its water level.
C. It increases in temperature.
D. It decreases in temperature.

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Answer 1

Explanation:

3.(B. from bottom to top)

4.(C. The handle has high thermal expansion.)

5.(C. It increases in temperature.)

Answer 2

The right responses to the given questions are given below:

3. The correct answer to the question is option B.

• Heat transfer or transmission in liquids is mostly accomplished by convection.
• It entails the movement of heated molecules in a container, which warms other molecules in the same container.
• When the soup within the pot is maintained on the stove, the pot heats up first, heating the bottom of the soup. It travels higher as its density decreases in response to increased temperature.

• As a result, heat is transferred from the bottom to the top of the soup.

4. The correct response to the given question is option A.

• To avoid getting burned when handling utensils or pans, the handles are built of any material that does not transfer heat quickly.
• Handles made of wood or plastic are examples of such materials.
• As a result, the lady can grip the handle because it is composed of a heat-insulating substance.

5. The right solution is option C.

• When the water in a pan is heated over a flame, it heats by conduction first, then convection.
• As a result, the temperature of the water rises.