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Worksheets32. Energy
Total questions: 61
Worksheet time: 31mins
Kinetic energy is the energy possessed by a moving body.
The amount of kinetic energy that a body has will depend upon its
mass and speed
mass and acceleration
volume and height above ground
position and temperature
The energy due to a body’s position or condition is known as
(a)
The energy that a moving object has is called
(a)
The photo shows the Robin Hood statue in Nottingham.
To fire an arrow, the string of the bow must be stretched.
(a) potential energy is the energy stored in objects that can be stretched or squashed.
The photo shows a crane lifting a load.
Gravitational (a) energy is the energy stored when something is raised to a height.
When kicking a football on the ground, energy is transferred from the kicker’s body to the ball, setting it in motion.
Energy cannot be (a) or destroyed, but may be converted from one form to another .
When a ball is thrown up, its kinetic energy is transferred into (a) energy as its height increases.
When a ball is dropped from a height above the ground, its potential energy is converted into (a) energy.
When a spring is stretched, (a) energy stored in your muscles is converted into potential energy stored in the spring.
The photo shows a power plant which gets energy by drilling deep into the earth.
What is the name of this type of energy?
Geothermal
Hydroelectric
Biomass
Solar
Wind is a renewable source of energy.
Which one of the following is also a renewable source of energy?
Tidal energy
Nuclear energy
Fossil fuels
Turf
The photo shows different fuels burning.
Which one of the following fuels is NOT regarded as a fossil fuel?
Wood
Coal
Oil
Natural gas
Woollen hats do not allow heat to travel easily through them, thus keeping our heads warm.
A substance that does not allow heat to travel through it is called a good thermal (a) .
The photo shows an electricity generating plant which burns fossil fuels.
Which TWO of the following elements are fossil fuels mainly made from?
Carbon
Hydrogen
Oxygen
Nitrogen
Sulfur
The photo shows a peat bog. Peat is considered a non-renewable source of energy.
Which one of the following is also a non-renewable source of energy?
Nuclear energy
Tidal power
Solar energy
Wind power
Nuclear energy may become an important source of energy in the future.
Which one of the following statements about nuclear energy is NOT true?
Nuclear energy has no harmful effects.
Nuclear energy produces heat on the sun.
Large amounts of energy are produced by a small mass of fuel.
Uranium is an important fuel for nuclear energy.
Producing electrical energy causes a certain amount of pollution.
Which one of the following energy sources has the HIGHEST level of pollution?
Nuclear energy
Solar energy
Hydroelectric energy
Tidal energy
Wind energy
Mazda are producing hydrogen fuel vehicles for commercial use. The photo shows one of these vehicles.
Which one of the following statements is NOT correct about the use of hydrogen as a fuel?
Hydrogen is a very safe fuel to burn.
It is expensive and time-consuming to produce hydrogen.
Hydrogen is readily available as a fuel.
There are no poisonous emissions from the hydrogen fuel cell.
Fracking involves pumping large amounts of water underground at high pressure. This is used to get oil and gas from under the ground.
Environmentalists are concerned because
harmful chemicals are used in the process.
it may cause thunderstorms.
rare species of butterflies are in danger.
it is very expensive.
Wave power captures the energy of waves to do useful work. The photo shows one such device in Denmark.
Which one of the following statements about wave power is INCORRECT?
It can be harmful to the environment.
It requires powerful waves to generate large amounts of energy.
It is a hazard to marine creatures.
It is a renewable source of energy.
Hydroelectric energy is produced at a dam to generate electrical energy.
During this process, water falls from a height.
What is the name of the energy of this falling water?
Kinetic energy
Solar energy
Tidal energy
Magnetic energy
Bicycles that use dynamoes do not require batteries to light its lamps.
The energy conversion in a dynamo is:
kinetic to light
wind to light
kinetic to solar
potential to heat
An electric light bulb converts electrical energy into which TWO of the following:
Heat energy
Light energy
Kinetic energy
Wave energy
Magnetic energy
The diagram shows a building with a group of solar cells on the roof.
The energy transfer that takes place in a solar cell is
light to electrical.
electrical to light.
light to mechanical
electrical to light.
electrical to heat.
The energy that comes from the flow of heat is called (a) energy.
Heat energy can be lost from a house in different ways.
A family wishes to reduce the heat energy being lost from their home.
Which THREE of the following methods will prevent heat loss?
Fill the outside cavity walls with foam
Add more attic insulation
Fit double glazing
Increase the height of all rooms with low ceilings
Plant bushes outside windows
The photo shows the El Tatio geyser in Chile which is a hot spring in which water intermittently boils, sending a tall column of water and steam into the air.
Geothermal energy is a non-renewable source of energy because the heat comes from deep within the earth.
false
true
Heat from a fire is a form of energy.
Its unit is the (a) .
Work and energy are both measured with the same unit.
What is this unit?
(a)
Energy is the ability to do (a) .
Complete the following equation for calculating work done:
Work = Force × (a)
A force of 25 newtons pushes a lawnmower a distance of 20 metres.
How much work is done?
500 joules
45 joules
1.25 joules
500 newtons
An Olympic diver of weight 650 N dives through 10 metres.
How much work in joules is done by gravity on the diver?
(a)
A woman of weight 600 newtons climbs a stairway of height 5 metres.
How much work in joules does she do?
(a)
A force of 30 newtons pushes a box along the ground a distance of 10 metres.
How much work is done in joules?
(a)
A force of 100 newtons is used to push a trolley across a car park.
If 1 kJ (1000 J) of work is done, how far has the trolley moved?
10 metres
1,100 metres
100,000 metres
100 metres.
Power is the rate at which work is done.
What is the power of a man who does 3.5 kilo-joules of work in climbing a stairs in 10 seconds.
350 W
0.35 W
3510 W
35000 W
Power is measured in watts or kilowatts.
The power rating of an electric kettle is 1.8 kW (1800 W).
How many joules of work does the kettle do each second when heating water?
(a)
The Sankey diagram is that for a LED bulb.
What is its percentage efficiency (as a whole number)?
(a)
A solar cell transfers 0.6 joules of useful electrical energy to charge the phone each second, and the solar cell has an efficiency of 0.15.
Using the equation, how much energy is supplied by the solar cell each second?
(a)
The Sankey diagram shown is that for a CFL bulb.
What is its percentage efficiency?
(a)
Study the Sankey diagram shown for a LED bulb.
How many joules of energy are used as light?
(a)
Study the Sankey diagram shown for a light filament bulb.
If the input energy is 120 joules and useful energy is 15 joules, how much energy is dissipated in joules?
(a)
