P2 - Energy transfer by heating

Question 1

When will energy transferred by heating?

Answer 1

The overall energy transfer will be from hot to cold

Question 2

What is temperature?

Answer 2

Temperature is a measure of the average energy that the particles have

Question 3

What are examples of Thermal Conductors?

Answer 3

• Copper
• Magnesium
• Iron bar
• Steel
• Silver

Question 4

What are examples of Thermal Insulators?

Answer 4

• Wood
• Wool
• Bubble wrap
• Sand
• Air
• Vacuum

Question 5

How does conduction work?

Answer 5

When particles are near a heat source, they will vibrate and pass it on to nearby particles

Question 6

How does conduction work in a metal rod?

Answer 6

The particles will begin vibrate like any other object
HOWEVER
Electrons in a metal material are called Free Delocalised Electrons
- These spread across the metal material and pass on the vibrations quicker

Question 7

Are gases good thermal conductors? Explain your answer

Answer 7

They aren’t good conductors
* Because the particles are too far apart
* There are no Free Delocalised Electrons to speed up the process

Question 8

How do gloves help to combat conduction

Answer 8

Because all gloves are insulators, therefore, nothing can be conducted through them efficiently