Changes in energy Flashcards
what are the 8 main stored of energy?
internal (thermal)
chemical
kinetic
gravitational potential
electrostatic
magnetic
elastic potential
nuclear
Description of magnetic energy stores: (2)
-repelling poles pushed closer together
-attracting poles pulled further apart.
Description of internal energy stores:
-what is this in most cases?
total kinetic and potential energy of the particles in an object
-vibrations
what are vibrations known as?
kinetic energy of particles
how do the particles and vibrations of hotter objects differ to colder objects?
particles have more internal energy and vibrate faster.
do ice particles have internal thermal energy?
yes
Ice particles vibrate slower, but still have energy.
description of chemical energy stores:
what is this in some cases?
energy stored in chemical bonds
-such as those between molecules
description of kinetic energy stores:
energy of a moving object
description of electrostatic energy stores:
-repelling charges have been moved closer together
-attracting charges have been pulled further apart.
description of elastic potential energy stores?
energy stored when object is stretched or squashed.
description of gravitational potential energy stores:
energy of object at height.
description of nuclear energy stores:
energy stored in nucleus of atom
what is the difference between magnetic and electrostatic energy stores?
magnetic = poles
electrostatic = charges
what is a pathway?
process by which energy can be transferred from one store into another
what is a pathway?
process by which energy can be transferred from one store into another
