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Building Circuits 2

Students check their understanding of circuits and which materials conduct and insulate electricity.

Key stage:  KS 2

Curriculum topic:  Electricity

Curriculum subtopic:  Conductors and Insulators

Difficulty level:  

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QUESTION 1 of 10

A circuit carries electrical energy from its source to a device.

 

Over-head cables carried by pylons are components in large circuits from the powerstation to our homes, schools and factories.

 

Our homes have mains circuits, which carry electricity to every room.

Electrical appliances have circuits inside them.

 

To allow the electricity to flow, the circuit must be a complete loop, with no gaps. Circuits are made using conducting materials (metal wires) which allow the electricity to flow, and insulating materials (plastics) which stop the flow of electricity.

For electricity to flow, a circuit must be........

long

short

a complete loop

insulated

In our homes, we can turn electricity off at the mains switch.

 

Mains electrical circuits have switches to........

keep us safe

save money

stop electricity escaping

Keisha decides to make a simple switch using kitchen foil, electrical wire and card.

 

The kitchen foil is an electrical......

insulator

conductor

The insulator in Keisha's switch is the........

wire

card

air

Wires carry electricity to and from Keisha's switch. Which TWO statements explain why the wires covered in plastic?

to stop the electricity leaking out

plastic is an electrical insulator

to keep us safe

to look colourful

Keisha's teacher has brought in a selection of batteries which are different shapes and sizes:


 

Which TWO of these statements explains why batteries are not all the same? 

they provide different amounts of power

they are used in different circuits

they are different colours

The circuits in wrist watches are powered by.......

the mains

small batteries

large batteries

Keisha and Jack choose an AA battery to power their circuit. They connect a buzzer and the switch Keisha made earlier into the circuit.

 

Which TWO materials is the buzzer made of?

card

metal

plastic

The metal is used because it is......

colourful

an insulator

a conductor

Plastic is also used to make the buzzer because it is..........

colourful

an insulator

a conductor

  • Question 1

For electricity to flow, a circuit must be........

CORRECT ANSWER
a complete loop
  • Question 2

In our homes, we can turn electricity off at the mains switch.

 

Mains electrical circuits have switches to........

CORRECT ANSWER
keep us safe
EDDIE SAYS
Electricity can be very dangerous. We must always switch appliances off at the mains before we move them or check them.
  • Question 3

Keisha decides to make a simple switch using kitchen foil, electrical wire and card.

 

The kitchen foil is an electrical......

CORRECT ANSWER
conductor
EDDIE SAYS
Conductors allow electricity to flow though them easily.
  • Question 4

The insulator in Keisha's switch is the........

CORRECT ANSWER
card
EDDIE SAYS
Insulators stop the flow of electricity. Non-metals are usually INSULATORS.
  • Question 5

Wires carry electricity to and from Keisha's switch. Which TWO statements explain why the wires covered in plastic?

CORRECT ANSWER
plastic is an electrical insulator
to keep us safe
EDDIE SAYS
Insulating materials are used in circuits to keep us safe.
  • Question 6

Keisha's teacher has brought in a selection of batteries which are different shapes and sizes:


 

Which TWO of these statements explains why batteries are not all the same? 

CORRECT ANSWER
they provide different amounts of power
they are used in different circuits
EDDIE SAYS
Batteries are used in a wide range of electrical devices. Calculator batteries are small, but a car battery, which provides a lot of energy, is large.
  • Question 7

The circuits in wrist watches are powered by.......

CORRECT ANSWER
small batteries
  • Question 8

Keisha and Jack choose an AA battery to power their circuit. They connect a buzzer and the switch Keisha made earlier into the circuit.

 

Which TWO materials is the buzzer made of?

CORRECT ANSWER
metal
plastic
  • Question 9

The metal is used because it is......

CORRECT ANSWER
a conductor
  • Question 10

Plastic is also used to make the buzzer because it is..........

CORRECT ANSWER
an insulator
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