NS Topic 5

Steel can resist being stretched. We say it has .........

• compressive strength

• tensile strength

this is not an example of a material with compressive strength

• concrete

• rock

• metal

• Bricks

Some materials have a characteristic...... which is useful to us, e.g. traffic lights.

• Colour

• Cost

• Texture

• Sound

The material in the picture comes from:

• Plants

• Animals

• The earth/rocks

The material in the picture comes from:

• Plants

• Animals

• The earth/rocks

The material in the picture comes from:

• Plants

• Animals

• The earth/rocks

State the phase change that takes place when water boils

• Boiling

• gas

• Condensation

• Precipitation

Name the metal that is usually used in electrical cords

• Silver

• Steel

• Copper

• aluminium

You want to test the electrical conductivity of different materials. A fair test means:................. So you connect the battery, wires and a torch bulb in a circuit and you add a different material to this circuit for every test run.

• testing the various factors that will affect the result

• Comparing the various factors

• Keeping all the variables constant

• Keeping all the variables constant except for one

select a poor conductor of heat

• Wood

• Metal

• silver

• copper