WorksheetsEnergy
Total questions: 29
Worksheet time: 29mins
What is energy?
The ability to not do work
How we measure time
How we measure movement
The ability to do work
How do you know a cup of teas has energy?
It has tea in it
It is hot
It is made with a kettle
You pour it into a cup
Which of these are types of energy stores?
Thermal
Nuclear
Kinetic
All of the above
What do we measure energy in?
Joules
Watts
Newtons
Grams
How many joules are in a kilojoule?
10
100
1000
10,000
How many kilojoules of energy is there in 200ml of this fruit juice
53
224
448
106
1 calorie is about the same as 4 joules of energy. How much energy (in joules) is there in this pack of biscuits
150
600
200
50
How many calories are in this grilled burger?
22
220,000
220
2.2
In this experiment what was the independent variable (the thing we measured)?
Temperature change of the water
Size of food
Height of clamp
Length of tongs
What safety precautions did we have to follow
Wear goggles to avoid splashes in our eyes
Put equipment in middle of desk to avoid smashes
Watch flame at all times
All of the above
How is power measured?
Joules
Watts
Newtons
Grams
What is a watt?
Number of joules transferred in a minute
Number of joules transferred in an hour
How much energy it has
Number of joules transferred in a second
How many joules per second does this food steamer transfer?
900
60
120
5716
How many watts does this toaster use?
90
9
900
9000
If the Power of a lightbulb is 10W, how much energy is transferred in 1 second?
10
100
3
6
If the Power of a lightbulb is 10W, how much energy is transferred in 5 seconds?
10J
5J
50J
100J
What is used to measure how much energy is transferred by electricity?
Joule Meter
Newton Meter
Scales
Amp meter
You can calculate power by dividing the energy transferred by the time it is running (power = energy/time).
If a lamp transfers 100J in 10 seconds what is its power?
100W
10W
50W
500W
You can calculate power by dividing the energy transferred by the time it is running (power = energy/time).
If a hair dryer transfers 1025J in 25 seconds what is its power?
66W
410W
41W
33W
You can calculate power by dividing the energy transferred by the time it is running (power = energy/time).
If a toaster transfers 1980J of energy in 1 minute
333W
33W
300W
30W
Which of the following are ways to reduce the heat lost in your house? (Note: there is more than one correct answer)
Make sure the walls are well insulated
Wear less clothing
Have double glazed windows
Have a smaller house
How can we produce and use electricity in a sustainable way? (Note: there is more than one correct answer)
Put on all devices at once
Use nuclear power
Use less electricity - use more efficient devices
Turn on devices in the night (such as chargers)
How can we travel in a sustainable way? (Note: there is more than one answer)
Buy food locally that hasn't been transported long distances
Have local holidays
Take the train or bus rather than the car
Live somewhere far away from work
Select all the examples of renewable energy sources
Wind power
Nuclear power
Solar power
Hydro power
Select examples of non-renewable energy sources
Tidal
Oil
Coal
Petrol
What do the arrows represent on a food chain?
What eats what
Energy transfer
Who kills who
How do plants get energy from the sun?
By excretion
By Respiration
By photosynthesis
By movement
Plants lose a lot of energy - which process below are ways they lose it?
Movement
Undigested food
Bacteria and Fungi
Respiration
What is an omnivore?
An organism that eats both animals and plants
An organism that eats animals only
An organism that eats plants only
An organism that eats nothing
