Unit 1: Simple Circuits pg. 86-89

Question 1

A system is made up of many _____.

Answer 1

Parts.

Question 2

What do these parts do?

Answer 2

The parts work together to perform a special function, eg. a kettle heating water.

Question 3

What is the role of the circuit?

Answer 3

The role of the circuit is to send electricity from the source to the device.

Question 4

What is a “source”?

Answer 4

A source is where a thing comes from/starts

Question 5

What is the “device”?

Answer 5

The device is something which changes one type of energy into another.

Question 6

What does the device do in a circuit?

Answer 6

It changes the electricity (OR electrical energy) into a useful output energy, eg. light.

Question 7

What do all electrical systems have?

Answer 7

All electrical systems have:

• a input source
• a device
• a output

Question 8

What will happen if a system does not have one of these stages?

Answer 8

It will not work.

Question 9

What are the components of a simple circuit?

DO NOT get mixed up with the ‘what do all electrical systems have?’ with this question

Answer 9

The components of a simple circuit are:

• a source of energy
• conducting material
• device

Question 10

1.SOURCE OF ENERGY

The source is where a ____ gets its _____. The source of energy for ______ devices can be _____ electricity or a ____ (or many ____, such as a ________).

Answer 10

The source is where a DEVICE gets its ENERGY. The source of energy for ELECTRICAL devices can be MAINS electricity or a CELL (or many CELLS, such as a BATTERY).

Question 11

2.CONDUCTING MATERIAL

Many materials _______ electricity. Most systems use ____ as the _______ material. Many different types of ____ can be used, such as ______ ____.

Answer 11

Many materials CONDUCT electricity. Most systems use WIRES as the CONDUCTING material. Many different types of WIRES can be used, such as COPPER WIRE.

Question 12

3. DEVICE

There are many different types of devices that change _______ energy into useful ______ energy. This ______ energy can be _____, ______, ______, or ______.

Answer 12

There are many different types of devices that change ELECTRICAL energy into useful OUTPUT energy. This OUTPUT energy can be HEAT, LIGHT, SOUND, or MOVEMENT.

Question 13

What is an “unbroken” pathway of electricity?

Answer 13

A unbroken pathway of electricity is when you connect all the different components to make a system, which allows electricity to flow through it.

Question 14

What is an “broken” pathway of electricity?

Answer 14

A broken pathway of electricity is when there is a break in the circuit and the electricity has stopped. Many things can stop the flow of electricity, eg. a switch.

Question 15

What happens when a switch is open?

Answer 15

The electricity is stopped.

Question 16

What happens when a switch is closed?

Answer 16

The electricity is allowed to flow through the circuit.