Every person, animal and device transfers energy. Much of that energy is supplied by electricity, which must be generated from other energy stores. Some of these are renewable but most are non-renewable.
What happens whenever energy is transferred between stores?
All the energy is transferred to other useful stores
Some of the original energy is dissipated
All of the energy is dissipated to the surroundings
Which of these is not a fossil fuel?
Which of these cannot happen to energy?
Energy cannot be stored
Energy cannot be dissipated
Energy cannot be created
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?
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?
What is the efficiency percentage of Christmas lights that give out 10 W of light radiation for an electrical power input of 200 W?
How might a toy car be made more efficient?
Push it with a greater force
Press down on it harder
Add a little oil to the moving parts
A 4 kg ball has 50 J of energy in a kinetic store. How fast is it moving? - Higher