P2 - Specific Heat Capacity

Question 1

Specific heat capacity equation

Answer 1

Energy transferred J = mass (kg) x specific heat capacity (J/KG) x temperature change (degrees celsius).

Question 2

If an object has a greater mass, what will the temperature be like?

Answer 2

• The greater the mass of an object, the more slowly its temperature will increase.

Question 3

What appliances can be used to heat houses?

Answer 3

• Electric/Gas heaters, oil fired central heating or solid fuel stoves.

Question 4

How can the rate of energy transfer from houses be reduced?

Answer 4

• Loft insulation, cavity wall insulation, double glazed windows, aluminium foil behind radiators and external walls with thicker bricks and lower thermal conductivity.

Question 5

What is cavity wall insulation?

Answer 5

• Insulation material that is used to fill the cavity between the 2 brick layers of an eternal house wall.