Heat

Question 1

Define heat transfer and mention how it occurs

Answer 1

Occurs from where there is more energy (higher temperature) to a place with less energy (low temperature)
3 ways heat transfer occurs 
 - conduction 
 - convection 
 - radiation

Question 2

Give an example of heat transfer

Answer 2

In a hot bath, heat transfers from the hot water to the cool air ( the air around the bath is warmer)

Question 3

Define heat conduction

Answer 3

Direct contact from our hands through a conductor

Question 4

Give an example of heat conduction

Answer 4

Touching a kettle when it boils

Question 5

Define heat convection

Answer 5

When moving fluids (liquid and gases) rise and fall due to differences in density
Warmer fluids are less dense colder fluids are moe dense

Question 6

Give an example of heat convection

Answer 6

When boiling water on a stove or while making tea or while boiling an egg

Question 7

Define heat radiation

Answer 7

The transfer of energy in the form of electromagnetic radiation

Question 8

Give an example of heat radiation

Answer 8

X-rays, gamma rays, and microwaves are other forms too

- produced by the sun, instead of light bulbs)

Question 9

What direction does heat transfer

Answer 9

From hot to cold

Question 10

What is the difference between heat and temperature

Answer 10

Heat is a transfer of thermal energy and temperature is a property the object exhibits