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WorksheetsEnergy 8
Total questions: 15
Worksheet time: 29mins
What is a mechanical advantage?
A pulley system
The force applied
The advantage gained by use of a mechanism
A simple machine
A joule is...
(select 2 answers)
1 Newton of force applied over a 1 meter distance
found in food
a unit of force
a unit of energy
Work done is measured in
Newtons
Joules
Distance
Newtons per metre squared
Force =
work x distance
work ÷ distance
distance ÷ work
Work =
force x distance
force ÷ distance
distance ÷ force
The INPUT force in a pulley...
is the load lifted
is the force applied to pull the rope
The Law of Conservation of Energy means that...
(select 2 answers)
energy can not be created or destroyed
work done must be equal
the displacement (distance moved) must be equal
the input and output forces must be equal
20N of force were applied to a pulley rope to move a load of 100N 50cm. How many wheels were on the pulley?
2
3
4
5
20N of force were applied to a pulley rope to move a load of 100N 50cm. How far was the rope pulled?
1 metre
150cm
200cm
2.5m
A lever is a force multiplier. This means
you must apply more force to make it work
it will increase the effect of the force
it will decrease the effect of the force
A lever is used to lift 50N that is 2m form the fulcrum (pivot). How much force is applied to a 4 metre lever?
100m
100N
25N
25m
Which example contains the largest thermal energy store?
A cup of coffee
A public swimming pool
A bowl of hot soup
An ice bath
When the temperature increases
particles heat up
particles move faster
particles gain energy
particles expand
The amount of energy needed to increase temperature depends upon...
(choose 3)
the mass of the material being heated
the volume of the material being heated
what the material is made of
the temperature rise wanted
the starting temperature
Thermal energy transfers from
hot to cold
cold to hot
