Concept 1.3

The area around the magnet in which its force appears is known as …………………

• Magnetic field

• Magnetism

• Electric current

• Gravity

When we throw a ball upward it returns back to the Earth due to ………………….

• Gravity only

• Electricity and mass

• Magnetism only

• Magnetism and electricity

Gravity and magnetism are similar in that ……………..

• They are repulsion forces only

• They are attraction forces only

• They are forces that attract all objects

• We cannot see them

The ……………… of objects and …………….. between them affect the gravity force.

• Mass - colour

• Distance - mass

• Mass - distance

• Volume - distance

……………….. is a magnetic material that is attracted to the magnet.

• Copper

• Iron

• Gold

• Wood

Some materials cannot be attracted to the magnet because they are ………………

• Magnetic material

• Made of nickel, iron and cobalt

• Non-magnetic materials

• Located at the magnetic field of the magnet

…………….. are used to spin the magnet in the generator to produce electricity.

• Water and wind

• Light and sound

• Electricity and sound

• Sound and heat

Magnets are used in generators and ……………. to generate ………………

• Turbines - sound

• Switches - sound

• Lamps - heat

• Turbines - electricity

The source of electricity in any electric circuit may be ……………..

• A metal wire

• A switch

• A battery

• An electric lamp

Mechanical energy is converted into …………….. energy in the generators.

• Light

• Sound

• Electric

• Thermal