Class Clips is changing
We will be introducing the new Knowledge and Learning Beta website over the coming months. Clips for use in the classroom are now available on your phone, tablet or PC.

Alternatively, you can still browse or search by keyword or clip number on this site.

Class Clips

# SecondaryScience : Phys: Energy - Heat and Temperature

Clip description Keywords
Bimetallic strips and heat transfer

Duration: 00:40

A demonstration of how a bimetallic strip works.

Conduction of heat (pt 1/2)

Duration: 00:14

Why do cups made of metal and polystyrene seem to be at different temperatures even though they contain water at the same temperature?

Conduction of heat (pt 2/2)

Duration: 00:30

Further explanation of why a metal cup feels colder than a polystyrene cup even though they contain water at the same temperature.

Duration: 01:06

A glass of iced water in the sun is used to exemplify three types of thermal transfer.

Duration: 03:08

An explanation, with particle animations, of conduction, convection and radiation.

Convection and insulation

Duration: 01:36

A brief introduction to convection and a more detailed description of insulation.

Differences between heat and temperature

Duration: 01:29

The difference between heat and temperature is examined using different amounts of water heated with the same energy.

Expansion of metal

Duration: 03:46

An investigation into the control of thermal expansion in the metal frame of a satellite and the testing of a special low-expansion metal called Invar.

Frying an egg with a paper pan

Duration: 02:34

An egg is fried using an improvised pan made from newspaper, but why doesn't the paper catch fire?

Grants to improve home insulation

Duration: 02:40

Demand for home insulation in the East Midlands is at record levels as people cut costs. Some homes are eligible for a grant to improve insulation.

Heat energy transfer

Duration: 01:06

An explanation of how heat energy always moves from hot to cold and how the energy is transferred.

Latent heat and changes of state

Duration: 01:39

An explanation of latent heat energy. When substances change state, they either give out or take in heat energy.

Temperature and thermometers

Duration: 01:30

Two fixed points on a thermometer are defined using ice and boiling water.

The discovery of superconductivity

Duration: 03:54

Jim Al-Khalili describes how Kamerlingh-Onnes' experimental work in cooling mercury led to John Bardeen's explanation of superconductivity.

Thermostats for temperature control

Duration: 02:23

A thermostat is used to control the temperature of an incubator for hatching birds' eggs.

Why doesn’t glass heat up in a microwave?

Duration: 02:57

A piece of glass is melted using a blowtorch and then placed in a microwave to show that liquids absorb the energy more effectively than solids.