LV 2 Assignment 8 Quiz - Scientific Principles - Outcome 4

There are three methods by which heat can be transferred. Select from the list below.

• Radiation

• Convection

• Capillary action

• Conduction

• Transpiration

Conduction happens when heat travels through or along a

material (one molecule to the next).

• True

• False

Copper is a very poor thermal conductor. Plastics tend

to be good thermal conductors.

• True

• False

Some materials are better at conducting heat than others. Look at the list below and select the materials that are considered good thermal conductors.

• Polystyrene

• Aluminium

• Copper

• Wood

• Iron

Materials that are ......... thermal conductors are also ......... electrical conductors.

(a)  

Convection can only take place in a fluid or (a)  

Write a brief explanation of how convection works.

Radiation is heat transfer via infrared light. It transfers heat from one body to another without heating the space in between.

• True

• False

Heat transfer

Heat is measured in degrees Celsius or scientifically in (a)  

Hot water cylinder pipes need insulating to keep the heat in, preventing hot water from loosing its temperature (efficiency). To comply with Building Regs Part L1a, how far should the pipes be insulated from the cylinder?

• At least 1 meter

• At least 2 meters

• At least 3 meters

• At least 4 meters