Grade 6 NST term 3 revision

An example of a conductor of electricity is

• Wood
• Plastic
• Copper
• Glass

Insulators are

• only conductors of electricity in certain conditions
• excellent conductors of electricity
• completely neutral to electricity
• poor conductors of electricity.

Electrical circuits

• Are systems using energy without wastage

• Supply energy to plants

• Are systems that transfers energy to wherever it is needed

Examples of what electrical systems are used for

• cooking and cleaning

• transportation and communication

• powering alarms, electrical gates and traffic lights

• agriculture and construction

True or false, closed circuits are interuppted circiut pathways

• false
• sometimes true
• partially true
• true

Answer explanation

Closed circuits are complete pathways through which electrical current flows.

Complete the definition. Insulation

• is the process of attracting heat or sound.

• is the process of protecting something by preventing the flow of electricity. Eg. plastic and rubber

• is the process of removing the material that prevents the passage of heat or sound. eg plastic, wood, and water

• is the process of increasing the passage of heat or sound.

A conductor is a

• A type of material that allows electrical current to follow through.

• A person who directs the performance of an orchestra or choir.
• A type of insulator
• A type of musical instrument

True or False. Insulators resist the flow of electrical current.

• True
• Partially
• Maybe
• False

Chemical energy is

• the energy stored in the Earth's core
• the stored energy inside a battery

• converted into electrical energy

• the energy generated by friction between two surfaces
• b and c

Complete the definition. A cell is a source of

• something we need

• electrical energy

• food and water

• light