What happens whenever energy is transferred between stores?
All the energy is transferred to other useful stores
Some of the original energy is lost to the surroundings
All of the energy is lost to the surroundings
Which of these is not a fossil fuel?
Coal
Oil
Uranium
Which gas is linked to global warming?
Carbon monoxide
Sulphur dioxide
Carbon dioxide
What does it mean if an energy resource is renewable?
That it can be recycled
That it can be reused
That it can be replenished
What are nuclear fuels used for?
Electricity generation
Household heating
Nuclear cars
Which of these is an advantage of gas power stations?
They can start producing electricity quickly
They make use of a renewable source
They don't contribute to global warming
Which energy resource is the least reliable?
Nuclear
Wind
Gas
Which of these is an advantage of nuclear power stations?
Nuclear is non-renewable
Nuclear does not release carbon dioxide
Nuclear power stations start up slowly
Which energy resource produces the majority of electricity used globally?
Nuclear fuels
Renewable energy resources
Fossil fuels
The efficiency of a device is a measure of…
How much of the total input energy appears as useful output energy.
How much of the useful output energy is conserved in other forms.
How much of the total input energy is created from renewable sources.
Which of these statements is true?
Efficiency is measured in joules.
Efficiency is measured in newtons.
Efficiency does not have a unit.
What is the correct formula for calculating efficiency?
Efficiency = useful output energy ÷ total input energy.
Efficiency = total input energy ÷ useful output energy.
Efficiency = useful input energy ÷ useful output energy.