P2:Energy Transfer By Heating EOY 10 key info

Question 1

What are the four methods of heat transfer?

Answer 1

• conduction
• convection
• radiation
• evaporation

Question 2

What are good thermal conductors?

Answer 2

Metals

Question 3

What is the heat main transfer in soilds?

Answer 3

Conduction

Question 4

Is black a good or bad absorber?

Answer 4

Good

Question 5

Is black a good or bad reflector?

Answer 5

Poor

Question 6

Is white a good or bad absorber?

Answer 6

Poor

Question 7

Is white a good or bad reflector?

Answer 7

Good

Question 8

What are the 4 ways of reducing heat transfer from a house to its surroundings?

Answer 8

• loft insulation
• cavity wall insulation
• double glazing
• foil behind radiators

Question 9

What are conductors?

Answer 9

Materials that let electricity pass through them easily

Question 10

What are insulators?

Answer 10

Materials that do not allow electricity to pass through them.

Question 11

What does specific heat capacity mean?

Answer 11

Amount of energy needed to change the temperature of a 1kg substance by 1 degree

Question 12

Equation for energy transferred?

Answer 12

Energy transferred= mass x specific heat capacity x temperature change

Question 13

What is cavoty wall insulation?

Answer 13

Insulation Mateiral used to fill the cavoty between 2 brick layers ofman external house