Energy Flashcards
Name 3 energy stores.
Chemical, Nuclear, Kinetic, Gravitational Potential, Elastic Potential, Thermal, Magnetic, Electrostatic
Define ‘Chemical Energy’
Energy stored in the bonds between atoms.
Define ‘Nuclear Energy’
Energy stored between the particles in the nucleus of an atom.
Define ‘Kinetic Energy’
Energy stored in the movement of an object.
Define ‘Gravitational Potential Energy’
Energy stored when the height of an object increases.
Define ‘Elastic Potential Energy’
Energy stored when an object is stretched.
Define ‘Thermal Energy’
Energy stored in a warm object.
Define ‘Magnetic Energy’
The energy store between two magnets
Define ‘Electrostatic Energy’
Energy stored between electrically charged objects.
What is a ‘Mechanical Pathway’?
A way of transferring energy when forces move through a distance.
What is an ‘Electrical Pathway’?
A way of transferring energy by charged particles flowing through a potential difference.
What is a ‘Heating Pathway’?
A way to transfer energy due to a difference in temperature.
What is a ‘Radiation Pathway’?
A way of transferring energy by waves (light and sound)
What unit is energy measured in?
Joules
Energy can be transferred, stored or dissipated, but can’t be…
Created or destroyed.
Define ‘Dissipated’
Spread out into the surroundings.
Give an example of something that will affect the amount of Gravitational Potential Energy acting on an object.
Weight and/or height.
What is the equation for GPE?
GPE = mass (m) x gravitational field strength (g) x height (h)
What unit is GPE measured in?
Joules (J)
What unit is ‘mass’ measured in?
Kilograms (kg)
What unit is ‘gravitational field strength’ measured in?
Newtons / Kilogram (N/Kg)
What unit is ‘height’ measured in?
Metres (m)
What is the Earth’s gravitational field strength?
9.8 N/kg
What is the equation for Kinetic Energy?
Ke = 0.5 x mass x velocity^2
