Science Properties of Material Grade 5 GNS

Match the following

• ELASTICITY

• ability of a material to withstand a heavy load without breaking or tearing

• STRENGTH

• ability of a material to return to its original shape after being stretched

• HARDNESS

• ability of a material to withstand wear and scratches

Match the following

• HEAT CONDUCTIVITY

• ability of a material to allow electricity to flow through it

• DENSITY

• ability of a material to allow heat to flow through it

• DEGREE OF TRANSPARENCY

• refers to how much light can pass through a material

• ELECTRICAL CONDUCTIVITY

• the mass per unit volume of a material

Metal tools can cut wood because ​ (a)   is ​ (b)   than ​ (c)   .

• metal
• wood
• harder
• stronger

Steel nail scratching plastic

• True

• False

Match the following

• Translucent

• Does not allow light to pass through.

• Transparent

• Allowing light to pass through so objects can be seen clearly.

• Opaque

• Allows some light to pass through.

Material that does not allow heat or electricity to flow through it.

• Electrical conductor

• Insulator

• Heat conductor

• Elastic

Rubber is harder than iron.

• True

• False

Answer explanation

Iron is harder than rubber.

A material that floats in water always has lower density than water.

• True

• False

Copper is used in electrical wires because it is an insulator.

• True

• False

Answer explanation

Copper is used because it is a good conductor of electricity.

A frying pan should be made from a poor conductor of heat.

• True

• False

Answer explanation

A frying pan should be made from a good conductor of heat.