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Electrical Appliances 2

In this worksheet, students will answer questions about mains and battery-operated everyday appliances.

'Electrical Appliances 2' worksheet

Key stage:  KS 2

Curriculum topic:   Electricity

Curriculum subtopic:   Common Electrical Appliances

Difficulty level:  

Worksheet Overview

QUESTION 1 of 10

Some appliances in our homes and at school use electrical energy from the mains and some work using batteries.

 

Mains electricity is very powerful, making it dangerous to use in our own science investigations.

 

Batteries are a weaker source of electrical energy and will not generally give us an electric shock.

 

Appliances, like this washing machine, which use a lot of energy work off the MAINS:

Washing machine

 

Smaller appliances, which do not use a lot of energy (like this calculator), get their energy from BATTERIES:

Calculator

 

Right, bearing all that in mind, let's have a closer look at appliances, at circuits and the use of mains and battery power.

If you are building an electric circuit, which THREE of these do you need?

wires

a switch

a power supply

a device or appliance

a light bulb

In the classroom, when we build a circuit, which power source MUST we use?

mains

battery

lightning

Complete the following sentence:

 

Battery

 

We use batteries because they are.........

small

safe

circular

When you plug something into the mains, it's because you want to use it - in fact, what you want is for the electrical energy to be turned into something else.  For example, you turn on the TV because you want the electricity to be turned into light (so you can see the picture) and sound (so you can hear it).

 

Now, match up these appliances with what the electrical energy is turned into:

 

Record player Hairdryer

LaptopDesk lamp

 

Column A

Column B

laptop
heat and movement
hairdryer
sound and movement
desk lamp
light and sound
record player
light and heat

Below are five electrical appliances.

 

Pick the THREE of these appliances/devices that use battery power.

cyclone cleaner

wrist watch

tumble dryer

mobile phone

mp3 player

Choose TWO options from the list below to complete the following sentence:

 

We use batteries to operate some devices because it makes them......

 

Torch

expensive

disposable

portable

safe

Now complete the following sentence:

 

In a circuit, a switch............

 

(think about each choice before you make a decision)

turns things on by making a gap

turns things off by making a gap

turns things off by completing the circuit

makes a personal stereo louder

What do you think that we MUST do with used batteries?

recycle them

put them in the bin

bury them in the garden

When our washing machine cannot be repaired, what MUST we do with it? 

turn it into modern art

throw it away

recycle it

  • Question 1

If you are building an electric circuit, which THREE of these do you need?

CORRECT ANSWER
wires
a power supply
a device or appliance
EDDIE SAYS
A circuit is made using a power supply (like a battery), an appliance (like a light bulb) and wires which allow the electrical energy to travel around the circuit. You don't HAVE to have a switch or a light bulb to make a circuit.
  • Question 2

In the classroom, when we build a circuit, which power source MUST we use?

CORRECT ANSWER
battery
EDDIE SAYS
Mains electricity is TOO POWERFUL to use in our circuit investigations - IT'S DANGEROUS! For that reason we always use batteries which are safe to use and convenient to handle as well as being fairly cheap.
  • Question 3

Complete the following sentence:

 

Battery

 

We use batteries because they are.........

CORRECT ANSWER
safe
EDDIE SAYS
Batteries are SAFE to use because they are not powerful like mains electricity. They push out a much smaller current and so it's unlikely that you are going to get any kind of electric shock.
  • Question 4

When you plug something into the mains, it's because you want to use it - in fact, what you want is for the electrical energy to be turned into something else.  For example, you turn on the TV because you want the electricity to be turned into light (so you can see the picture) and sound (so you can hear it).

 

Now, match up these appliances with what the electrical energy is turned into:

 

Record player Hairdryer

LaptopDesk lamp

 

CORRECT ANSWER

Column A

Column B

laptop
light and sound
hairdryer
heat and movement
desk lamp
light and heat
record player
sound and movement
EDDIE SAYS
That needed some thinking! The hairdryer turns the electricity into heat and moving air, to dry your hair. The lamp turns it into light (as well as heating up), so you can see your book or work. The record player needs to spin the record round (movement) and well as producing sound. Finally, the laptop has a screen you watch (light) and stuff you listen to (sound), so that's what the electricity is turned into. That OK?
  • Question 5

Below are five electrical appliances.

 

Pick the THREE of these appliances/devices that use battery power.

CORRECT ANSWER
wrist watch
mobile phone
mp3 player
EDDIE SAYS
So, a tumble dryer and a cyclone cleaner have to be plugged into the mains - they need more power than batteries can easily provide. On the other hand the mobile, the mp3 player and the watch only use low levels of power, and they are portable devices, so batteries are perfect.
  • Question 6

Choose TWO options from the list below to complete the following sentence:

 

We use batteries to operate some devices because it makes them......

 

Torch

CORRECT ANSWER
portable
safe
EDDIE SAYS
Yes, so many of our devices are carried around with us, so batteries are a must for them. Some devices might be disposable, but that's not the reason they use batteries. Anyway, with a world of diminishing resources, single-use items are a bad idea!
  • Question 7

Now complete the following sentence:

 

In a circuit, a switch............

 

(think about each choice before you make a decision)

CORRECT ANSWER
turns things off by making a gap
EDDIE SAYS
There are many kinds of electrical switches, but they work by making a 'gap' or break in the circuit. The gap is made of air, and air is an insulator, so electric current cannot flow when the switch is open.
  • Question 8

What do you think that we MUST do with used batteries?

CORRECT ANSWER
recycle them
EDDIE SAYS
That might be a surprise, but they can be recycled. So often batteries just get chucked in the bin, but we must be responsible for our environment. Batteries contain lots of chemicals which are dangerous, BUT can be recycled, like at your local supermarket.
  • Question 9

When our washing machine cannot be repaired, what MUST we do with it? 

CORRECT ANSWER
recycle it
EDDIE SAYS
RECYCLE! You knew that! Your local tip will have a special container for large items, like washing machines, and they are taken away, dismantled, and turned into new devices. We only have one world and it is our responsibility to look after it.
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