Keywords: Specific heat capacity; Mass; Storage Heater; Temperature

Keywords: Specific heat capacity; Mass; Storage Heater; Temperature

On a hot summers day a block of metal and a black of concrete were left out in the Sun. If both blocks

have the same mass, which one will get hotter quicker – why?

Keywords: Specific heat capacity; Mass; Storage Heater; Temperature

On a hot summers day a block of metal and a black of concrete were left out in the Sun. If both blocks

have the same mass, which one will get hotter quicker – why?

The metal block as metal conducts thermal energy better.

What would affect how quickly the block heats up?

Keywords: Specific heat capacity; Mass; Storage Heater; Temperature

What would affect how quickly the block heats up?

•What substance it is made from•The mass of the substance

•The amount of energy supplied to it.

Keywords: Specific heat capacity; Mass; Storage Heater; Temperature

Complete the following:

-Temperature is measured in …….-Temperature is measured using …….

-Energy is measured in …….-Energy is measured using a ……

Keywords: Specific heat capacity; Mass; Storage Heater; Temperature

Complete the following:

-Temperature is measured in Degrees Celcius (C)

-Temperature is measured using thermometer

-Energy is measured in Joules (J).

-Energy is measured using a Joulemeter.

Keywords: Specific heat capacity; Mass; Storage Heater; Temperature

When water was heated, the following results were

achieved:Test Mass of water

(g)Energy

Supplied (J)Change in

Temperature (C)

1 100 1600 4

2 200 3200 4

Keywords: Specific heat capacity; Mass; Storage Heater; Temperature

More accurate measurements would have shown:

4200J of energy is needed to increase 1kg of water by 10C.

Keywords: Specific heat capacity; Mass; Storage Heater; Temperature

4200J of energy is needed to increase 1kg of water by 10C

This is known as the Specific Heat Capacity of Water

Keywords: Specific heat capacity; Mass; Storage Heater; Temperature

Specific Heat Capacity

Is the energy needed for 1kg of a substance to raise its

temperature by 10C

Keywords: Specific heat capacity; Mass; Storage Heater; Temperature

E = m x c x Θ

E = Energy transferred (Joules, J)m = mass (kilograms, kg)

c = Specific heat capactity (Joules per kilogram per 0C)

Θ = temperature change (0C)

Keywords: Specific heat capacity; Mass; Storage Heater; Temperature

E = m x c x Θ

How much energy is needed to heat 5kg of water from 20 0C to 60 0C?

Keywords: Specific heat capacity; Mass; Storage Heater; Temperature

E = m x c x Θ

How much energy is needed to heat 5kg of water from 20 0C to 60 0C?

840,000 J (840 kJ)

Keywords: Specific heat capacity; Mass; Storage Heater; Temperature

E = m x c x Θ

Aluminium with a mass of 1kg is heated from 14 0C to 22 0C. This change in temperature

uses 7200J. What is the specific heat capacity of aluminium?

Keywords: Specific heat capacity; Mass; Storage Heater; Temperature

E = m x c x Θ

Aluminium with a mass of 1kg is heated from 14 0C to 22 0C. This change in temperature uses 7200J. What is the specific heat capacity of aluminium?

E 7200m x Θ 1 x 8 = 900J/kg 0C

Keywords: Specific heat capacity; Mass; Storage Heater; Temperature

Storage Heater

This is a device that uses electricity at night (off peak) to heat special bricks in the heater.

Energy transfers from the bricks keep the room warm. The bricks have a high specific heat capacity. They warm up slowly when heated, but as cool down slowly when the

heater is off. This is one way to be more cost effective.

Are you now able to….

I still feel unsure. I need some more help to understand.

I feel ok. I need to do some more work to check my understanding.

I am happy and feel I understand and can explain the main points.

Keywords: Specific heat capacity; Mass; Storage Heater; Temperature