Using Energy Flashcards
What three types of energy are stored?
Gravitational potential
Elastic potential
Chemical
Energy can be transferred from…
One form to another
What form of energy does any object above ground have?
Gravitational potential energy
What energy transfer occurs in a falling object?
Gravitational potential into kinetic
Where does the chemical energy stored In you muscles come from?
From the food you eat
What does the law of conservation of energy state?
It is not possible to creat or destroy energy it is only possible,e to transfer it from one form or place to another. However the total amount of energy is always the same
In terms of energy what happens when you burn a fuel?
Chemical energy in the fuel is transferred to the surrounding which get warmer
What energy transfer occur in a swinging pendulum?
Gravitational potential to kinetic and back again as it swings
What is a machine?
Something that transfers energy from one place to another or one form to another
The energy form a machine consist of?
Useful energy- transferred to the form of place we want
Wasted energy- not usefully transferred
Where will both useful and wasted energy be transferred to?
Surrounding which will warm up
How is energy often wasted in a machine?
As friction between moving parts of a machine
When is friction useful?
Brakes of a car of bike,
What is the energy supplied to a machine called?
Input energy
What will a more efficient machine have?
Less energy will have been wasted
