NS Mains Grade 5

Question 1

scientific name for battery

Answer 1

cell

Question 2

what is path through which the electricity flows

Answer 2

an electric circuit

Question 3

parts of the electric circuit (like bulb, battery, switch)

Answer 3

components

Question 4

electricity we use at home

Answer 4

what is mains electricity

Question 5

things you do to stop something dangerous from happening

Answer 5

what are precautions

Question 6

a substance that can be eaten or burned to produce energy

Answer 6

fuel

Question 7

when you say what you think will happen

Answer 7

predict

Question 8

Where can energy be stored

Answer 8

in cells and batteries

Question 9

where is main electricity made

Answer 9

in power stations

Question 10

what does a power station need to make electricity

Answer 10

a source of energy like coal

Question 11

What is a device that uses electrical energy to work called

Answer 11

appliance

Question 12

What are the terminals of batteries?

Answer 12

negative (little knob) and positive (flat side)

Question 13

what is the amount of energy in a battery measured in?

Answer 13

volts

Question 14

how does a torch cell or battery change energy?

Answer 14

Stored energy is changed into electrical energy

Question 15

what is an electrical circuit

Answer 15

a system that transfers electrical energy to where it is needed

Question 16

what is the national grid

Answer 16

network of cables and power lines that bring electricity from power stations to houses

Question 17

what do powerstations in South Africa use as a fuel

Answer 17

coal

Question 18

what do you call the big structures that support the power lines

Answer 18

pylons

Question 19

what do substations do

Answer 19

reduce the high voltage electricity to lower voltage. they transfer the electricity to the homes and buildings

Question 20

why is energy from a power station transported as high voltage

Answer 20

during transportation energy gets lost as heat

Question 21

Do page 153 with mom

Answer 21

…

Question 22

name some things as a safety precaution of electricity

Answer 22

stay away from power lines, stay away from substations, do not fly kites close to power lines, don’t climb on pylons, don’t poke fingers in sockets don’t plug too many things in together

Question 23

give some actions in case of emergency with electricity

Answer 23

turn off the power source, do not touch anyone else (they can get a shock), call emergency lines, 107 or 112

Question 24

the wheel is connected to a rod, the rod is called….

Answer 24

axle

Question 25

the axle moves around the

Answer 25

fulcrum

Question 26

what makes vehicles move easily

Answer 26

wheels and axles

Question 27

wheels that are fixed onto axles

Answer 27

what are fixed axles

Question 28

what is a fulcrum

Answer 28

the centre point

Question 29

what is made up of different parts

Answer 29

systems

Question 30

wheels that are fixed on axles but axles move around

Answer 30

a moving axles

Question 31

what help us do work

Answer 31

machines

Question 32

what is a big fan with blades that turn to make electricity

Answer 32

Turbine

Question 33

do page 155 activity with mom

Answer 33

….

Question 34

what do you call it when electricity flows through your body

Answer 34

electric shock

Question 35

do page 160 with mom

Answer 35

…..

Question 36

explain electricity box

Answer 36

it controls the flow of electricity to the building (it has a meters that measures)

Question 37

explain a wall socket

Answer 37

a save socket to plug in an appliance to get electricity

Question 38

what is high voltage

Answer 38

dangerous electricity with a high level of electricity