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KEEPING THINGS HEATED

Study which materials works best as a heat insulator

Suitable For

Grade 7

Difficulty

1

Time Required

 <12 Hours

Supervision

Required

What’s it about?

Air can be quite an effective heat insulator as it does not let heat pass through it easily. A thermos flask, polystyrene cup, or double glazed windows are all good examples of a layer of air acting as a form of insulation against heat loss.

Insulating an object can then prevent heat from either moving into an object as well as preventing heat moving out of an object. Test some ordinary household materials in the following science experiment to test which works best as an insulator against heat loss:

Topics covered

Thermal insulator, Conduction, Convection, Radiation

What will I need?

  • 4x GLASS JARS
  • RUBBER BANDS
  • HOT WATER
  • WOOL SOCK
  • ALUMINIUM FOIL
  • NEWSPAPER
  • BUBBLE WRAP
  • THERMOMETER

Procedure (Method)

Unfortunately, this section is only available in the e-book version of the project.

How does it work?

Unfortunately, this section is only available in the e-book version of the project.

The different types of energy transfer that take place during this science experiment are Conduction, convection and radiation which are the three common ways in which heat can be transferred. Heat is transferred from one material adjoining another through conduction such as the water touching the walls of the glass jar. Convection is the transfer of heat by a liquid or gas, such as air above the water’s surface in the jar and Radiant heat transfer occurs between objects that are not touching through radiation. An insulator is used to try and prevent the transfer of heat as far as possible. (Read more about this in the e-book version…)

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