Energy stores Flashcards
(10 cards)
What is an energy store?
An energy store is a substance or object that contains a large amount of stored energy that can be released to do work or cause change.
Name three common energy stores.
Chemical energy stores (e.g., fuels, food),
gravitational potential energy stores (e.g., an object at height)
elastic potential energy stores (e.g., stretched spring).
: How is chemical energy stored in fuels?
Chemical energy is stored in the bonds between atoms; when bonds are broken and reformed in a reaction, energy is released.
What is gravitational potential energy?
Energy stored by an object due to its position above the ground.
How can you increase the gravitational potential energy of an object?
By increasing its height or its mass.
What is elastic potential energy?
Energy stored when an object is stretched, compressed, or deformed.
Give an example of an elastic potential energy store.
A stretched rubber band or a compressed spring.
What happens to energy stored in energy stores during energy transfer?
It changes into other forms like kinetic energy, thermal energy, or light energy.
What is kinetic energy?
Energy of a moving object.
GPE = mass × gravitational field strength × height
