Question

Which statements best describe conduction? Check all that apply.
Conduction only occurs within a substance.
Conduction can occur within a substance or between two substances.
Slow-moving molecules collide with fast-moving molecules.
Fast-moving molecules collide with slow-moving molecules.
Thermal energy is transferred from a warmer substance to a cooler substance.
Thermal energy is transferred from a cooler substance to a warmer substance.

Answer 1

Following are the statements that best describe Conduction:-

2, 4, 5 out of 6 according to the series given in the Question.

• Conduction is a method of slow heat transfer based on temperature differences.
• Direct contact is essential for conduction to take place between two substances.
• In conduction, heat transfer occurs from a higher energy molecule to a lower energy molecule. Hence given 4 and 5 statements are correct.
• Conduction can also occur within a substance only when different parts of the substance are at different temperatures. (2)

Answer 2

Answer:

2, 4, 5

Explanation: