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WorksheetsEdexcel GCSE Physics SP3
Total questions: 78
Worksheet time: 45mins
Which of the following describe the law of conservation of energy? (Multiple answers)
Energy can be created but cannot be destroyed.
Energy cannot be created or destroyed.
Energy can only be transferred from one store to another.
Energy cannot be transferred.
What is the energy of a moving object called?
Kinetic energy
Elastic potential energy
Gravitational potential energy
Electrostatic energy
Thermal energy
What is the energy stored in objects in high positions?
Chemical energy
Nuclear energy
Gravitational potential energy
Magnetic energy
Thermal energy
What is the energy stored in the nucleus of an atom called?
Chemical energy
Nuclear energy
Gravitational potential energy
Magnetic energy
Thermal energy
What is the energy stored in hot objects?
Chemical energy
Nuclear energy
Gravitational potential energy
Magnetic energy
Thermal energy
What is the energy stored in electrical forces between charges?
Kinetic energy
Elastic potential energy
Gravitational potential energy
Electrostatic energy
Thermal energy
What is the energy stored in magnetic forces between magnetic poles?
Chemical energy
Nuclear energy
Gravitational potential energy
Magnetic energy
Thermal energy
What is the energy stored in stretched, squashed, twisted objects?
Kinetic energy
Elastic potential energy
Gravitational potential energy
Electrostatic energy
Thermal energy
What is the energy stored in food, fuel, muscles, batteries?
Chemical energy
Nuclear energy
Gravitational potential energy
Magnetic energy
Thermal energy
Energy can be transferred by which of the following:
(Multiple answers)
Mechanically - by a force
By electricity
Chemically
Kinetically
By heating
Energy can be transferred by which of the following:
(Multiple answers)
By light
Elastically
Magnetically
By sound
Potentially
State the type of energy which the egg gains as it falls.
(a)
State the type of energy stored in the egg before it is released.
(a)
A student stands on the ground with an egg in his hand. He throws the egg vertically upwards. Describe the energy changes of the egg during this. (Ignore air resistance)
Kinetic to potential
Chemical to kinetic to potential
Kinetic to mechanical to potential
Potential to kinetic
A student throws an egg vertically upwards. Describe the energy stored in the egg when the egg rises to a height of 10 m.
Kinetic energy
Chemical energy
Gravitational potential energy
Elastic potential energy
In an electric motor only some of the electrical energy is transferred into kinetic energy. State how the remaining electrical energy could be transferred.
(Multiple answers)
Transferred to chemical energy
Transferred by sound
Transferred to thermal energy of the surroundings
Transferred to potential energy
What are the units for measuring energy?
(a)
Calculate how much energy is wasted in one second by the compact fluorescent lamp.
(a)
Calculate the efficiency of the halogen lamp (as a number).
(a)
Calculate the efficiency of the compact fluorescent lamp (as a number).
(a)
Which lamp is more efficient?
Halogen lamp
CFL
Energy is dissipated when:
It is useful.
It spreads out.
It is destroyed.
It is created.
Energy dissipated to the surroundings is:
Useful energy
Wasted energy
Useful and wasted energy
Friction
When two moving parts touch each other, what is this called?
(a)
Friction between two objects causes the objects to:
Cool down
Heat up
Dissipate
How can the friction between moving parts be reduced?
Making the surfaces of the moving parts more rough
Streamlining the shapes of the moving objects
Tightening the moving parts
Lubricating the moving parts
Which of the following is true about the efficiency of a machine?
(Multiple answers)
Efficiency tells us how good a machine is at transferring energy into useful forms
Efficiency tells us how good a machine is at transferring energy into wasted forms
The efficiency of the machine is given as a number between 0 and 1
The higher the number, the more efficient the machine
The lower the number, the more efficient the machine
Which of the following would you class as useful energy of a washing machine?
(Multiple answers)
Energy transferred by sound
Thermal energy of the water
Thermal energy of the moving parts
Kinetic energy of the drum
Which of the following is used to calculate efficiency?
Useful energy/wasted energy
Wasted energy/total energy
Useful energy/total energy
Wasted and useful energy/total energy
Calculate the efficiency of a bulb when the total energy supplied is 100 Joules and the useful energy is 45 Joules.
(a)
Calculate the efficiency of a bulb when the total energy supplied is 100 Joules and the wasted energy is 65 Joules.
(a)
Kettle A transfers 200J of energy to boil some water. Kettle B transfers 250J to boil the same volume of water. Which kettle is more efficient?
A
B
Which of the following describes conduction?
Vibrations are passed on between particles in a solid
Energy is transferred from hotter parts of a fluid to cooler parts
Energy is transferred as a wave and does not need a medium
Which of the following describes convection?
Vibrations are passed on between particles in a solid
Energy is transferred from hotter parts of a fluid to cooler parts
Energy is transferred as a wave and does not need a medium
Which of the following describes radiation?
Vibrations are passed on between particles in a solid
Energy is transferred from hotter parts of a fluid to cooler parts
Energy is transferred as a wave and does not need a medium
Energy can be transferred by heating in different ways. Which one of the following does the image illustrate?
Conduction
Convection
Radiation
Energy can be transferred by heating in different ways. Which one of the following does the image illustrate?
Conduction
Convection
Radiation
Energy can be transferred by heating in different ways. Which one of the following does the image illustrate?
Conduction
Convection
Radiation
Energy can be transferred by heating in different ways. Which one of the following does the image illustrate?
Conduction
Convection
Radiation
When fluids are heated, what happens to the hotter part of the fluid?
It rises
It falls
When fluids are heated, what happens to the cooler part of the fluid?
It rises
It falls
Infrared radiation is absorbed and emitted easily by:
Light, shiny surfaces
Dull, dark surfaces
Infrared radiation is absorbed and emitted poorly by:
Light, shiny surfaces
Dull, dark surfaces
Which of the following are good thermal conductors?
Wood
Brick
Glass
Metals
Which of the following are true about insulators?
(Multiple answers)
They speed up the rate at which energy is transferred to the surroundings
They slow down the rate at which energy is transferred to the surroundings
Energy is not transferred through them very easily by heating
Energy is transferred through them very easily by heating
Which of the following is a good insulator?
(Multiple answers)
Trapped air
Metals
A vacuum
Plastic
Which of the following help to insulate a home?
(Multiple answers)
Brick walls
Cavities between walls
Single pane windows
Double glazed windows
Fibreglass
Materials with high thermal conductivity transfer energy by heating very easily.
True
False
Good insulators have high thermal conductivity
True
False
Which wall will allow energy to be transferred by heating faster?
Thin wall
Thick wall
Metals have high thermal conductivity.
True
False
Good thermal conductors like metals have a low thermal conductivity.
True
False
Here is a plastic kettle and a metal kettle. Which material will reduce energy transferred by heating?
Plastic
Metal
The rate of energy transfer can be reduced by:
Increasing the temperature difference
Decreasing the temperature difference
Which of the following are true about gravitational potential energy? (Multiple answers)
It is the energy of a moving object
It is the energy that is stored because of and object's position in a gravitational field
When object moves downwards, its stores more gravitational potential energy
When object moves upwards, its stores more gravitational potential energy
What does the amount of gravitational potential energy store of an object depend on? (Multiple answers)
The weight of the object
The mass of the object
The strength of gravity
How far the object is moved upwards
What is the gravitational field strength on Earth?
0.1 N/kg
1 N/kg
10 N/kg
100 N/kg
Which one of the following equations is used to calculate mass?
m = Δh / (ΔGPE x g)
m = (g x m) / ΔGPE
m = ΔGPE / (g x Δh)
m = ΔGPE / Δh
Which one of the following equations is used to calculate the change in height?
Δh = m / (ΔGPE x g)
Δh = (g x m) / ΔGPE
Δh = ΔGPE / (m x g)
Δh = ΔGPE / m
Write your answer to 1 decimal place and state the units.
(a)
Kinetic energy is the energy stored in (a) objects. What is the missing word?
The amount of kinetic energy stored in a moving object depends on which of the following:
(Multiple answers)
Height
Speed
Weight
Mass
Round your answer to the nearest whole number and state the units.
(a)
Round your answer to the nearest whole number and state the units.
(a)
The photo shows a spinning flywheel. State the type of energy is stored in a spinning flywheel.
(a)
The photo shows a spinning flywheel. State two ways to increase the amount of energy stored in the flywheel.
Decrease the speed
Increase the speed
Decrease the mass
Increase the mass
Nonrenewable energy sources will run out one day.
True
False
Which of the following and non-renewable energy resources?
(Multiple answers)
Nuclear
Coal
Oil
Gas
Solar
Which of the following are fossil fuels? (Multiple answers)
Nuclear
Coal
Oil
Gas
Solar
State the uses of fossil fuels. (Multiple answers)
Fuel for transport
Heating homes
Growing crops
Electricity
Cooking
State the uses of nuclear fuel. (Multiple answers)
Fuel for spacecraft
Heating homes
Growing crops
Electricity
Cooking
Which of the following are produced as a result of burning fossil fuels?
(Multiple answers)
Carbon dioxide (greenhouse gas) which causes global warming
Sulphur dioxide which causes acid rain
Radioactive waste
Oxygen
What is produced from nuclear power stations?
Carbon dioxide (greenhouse gas) which causes global warming
Sulphur dioxide which causes acid rain
Radioactive waste
Oxygen
Which of the following produces more energy per kilogram of fuel?
Fossil fuels
Nuclear fuel
State the disadvantages of a nuclear power station. (Multiple answers)
Greenhouse gases are produced
They're expensive to build and decommission
There is always a risk of a nuclear accident
Radioactive waste
Acid rain
Which of the following is true about radioactive waste? (Multiple answers)
It brings no harm
It may have to be stored safely for centuries
It is expensive to dispose of safely
It is cheap to dispose of safely
Which of the following are true? (Multiple answers)
Natural gas causes more pollution than burning coal
Natural gas causes less pollution than burning coal
Natural gas power stations emit less carbon dioxide than coal/oil power stations
Natural gas power stations emit more carbon dioxide than coal/oil power stations
If most countries in the world try to cut down the use of fossil fuels what could happen as a result? (Multiple answers)
Fossil fuel reserves will last longer
It will increase pollution
It will reduce pollution
It will have no impact
