Heat Transfer without Losing Heat

Q. A material that allows the flow of heat through it easily is called:

1. Insulator
2. Conductor
3. Capacitor
4. Semiconductor

Q.

Name four good conductors and four bad conductors.

Q. What are insulators? Explain some of their uses. [3 MARKS]

Q. Why do we use cooking utensils made up of copper?

Q. There are four cups made of different materials: Silver, aluminium, wood and copper. In which of these will tea remain warm for a longer time?

1. Silver cup
2. Aluminium cup
3. Wooden cup
4. Copper cup

Q.

Name any four good conductors.

Q.

There are four cups made of different materials: Silver, aluminium, wood and copper. In which of them will tea remain warm for a longer time?

1. Silver cup

2. Aluminium cup

3. Wooden cup

4. Copper cup