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WorksheetsP2.2 Energy
Total questions: 18
Worksheet time: 9mins
Name
Class
Date
1.
State the unit for energy
a)
joules
b)
calories
c)
power
d)
grams
2.
How many joules are there in a kilojoules?
a)
10
b)
1,000
c)
100
d)
10,000
3.
What does the law of conversation state?
a)
energy can not be transferred
b)
energy can be created
c)
energy can be destroyed
d)
energy can not be created or destroyed
4.
Energy can be dissipated. What does dissipated mean?
a)
spread out
b)
creating
c)
destroying
d)
decreasing
5.
In which of these three diagrams are the particles moving fastest?
a)
first
b)
second
c)
third
d)
all the same
6.
What happens to a particles in a liquid when you heat it up?
a)
the particles get hotter
b)
the move faster
7.
What type of energy transfer is involved in liquids?
a)
conduction
b)
radiation
c)
convection
d)
infra red
8.
How does the heat from the Sun transfer to Earth?
a)
radiation
b)
conduction
c)
convection
9.
Can you state what an insulator is?
a)
a conductor
b)
heat transferrer
c)
poor conductors
d)
poor transfers of radiation
10.
What happens when infrared radiation hit a shiny surface?
a)
reflects
b)
absorbs
11.
Which is the best absorber of heat radiation?
a)
matt white
b)
shinny black
c)
matt silver
d)
matt black
12.
What does the term 'renewable' energy mean?
a)
fossil fules
b)
energy from wind
c)
resources that will not run out
d)
energy from sun
13.
What is the unit for power?
a)
joules
b)
watts
c)
kilojoules
d)
calories
14.
Which one of these are not fossil fuels?
a)
oil
b)
gas
c)
gas
d)
nuclear
15.
To work out the kilowatts per hour (kWh), you do the calculation = kW x hour. What is the kilowatts per hour of a 12kW oven that has been used for 2 hours?
a)
800 W
b)
12 kWh
c)
24 kWh
d)
6 kWh
16.
Using the calculation: kWh = kW x hour. What is the kWh for a 2 W kettle that is used for 10 hours?
a)
20 W
b)
5 kWh
c)
20 kWh
d)
2 kWh
17.
Look at the calculation. How much work is done to lift a 2 N book by 2 meters?
a)
2 J
b)
200 J
c)
4 J
d)
16 J
18.
Look at the calculation. How much work is done to slide a 5 N book by 7 meters?
a)
5 J
b)
35 J
c)
12 J
d)
5 J
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