Energy Flashcards
Law of conservation of energy
Energy cannot be created nor destroyed, it can only change from one form to another
Types of energy (6)
Kinetic
GPE
Elastic
Chemical
Nuclear
Internal
What is kinetic energy
The energy of a moving object
What is gravitational potential energy
The energy something gains when you lift it up, and which it loses when it falls
What is elastic/strain energy
The energy of a stretched spring or elastic band
What is chemical energy
The energy contained in a chemical substances
What is nuclear energy
The energy contained within the nucleus of an atom
What is internal/thermal/heat energy
The energy something has due to its temperate (or state)
Energy transfer (4)
Forces (mechanical working)
Electrical currents (electrical working)
Heating
Waves
What is energy transfer by forces
When a force acts on a body, energy can be transferred between 2 forms
What is energy transfer by electrical currents
Electricity can be transferred from a power source, delivering it to components in a circuit
What is energy transfer by heating
Internal energy can be transferred from place to place by the process of conduction, convection and thermal radiation
What is energy transfer by waves
Light and sound carry energy and so it can transfer it between places
What energy forms don’t come from the sun?
Geothermal, nuclear and tidal
What is “work done”
When an object is moved over a distance by a force applied in the direction of its displacement
