Energy Stores Flashcards
Describe magnetic energy.
The energy stored when:
- repelling poles have been pushed closer together
- attracting poles have been pulled further apart
Describe internal (thermal) energy.
The total kinetic and potential energy of the particles in an object, in most cases this is the vibrations - also known as the kinetic energy - of particles.
Describe chemical energy.
The energy stored in chemical bonds, such as those between molecules.
Decribe kinetic energy.
The energy of a moving object.
Decribe electrostatic energy.
The energy stored when repelling charges have been moved closer together or when attracting charges have been pulled further apart.
Describe elastic potential energy.
The energy stored when an object is stretched or squashed.
Describe gravitational potential energy.
The energy of an object at height.
Describe nuclear energy.
The energy stored in the nucleus of an atom.
What are the four types of energy transfer?
- mechanical work
- electrical work
- heating
- radiation
What is mechanical work?
A force moving an object through a distance.
How does energy transfer through heating occur?
Due to temperature difference caused electrically or by chemical reaction.
How does energy transfer through radiation occur?
Energy tranferred as a wave, eg light and infrared - light radiation and infrared radiation are emitted from the sun.
What is doing ‘work’?
The scientific way of saying that energy has been transferred.
Describe a Sankey diagram.
- They start off as one arrow that splits into two or more points.
—> This shows how all of the energy in a system is transferred into different stores.
What is energy dissipation?
The ways in which energy is wasted.
