Physics test

• atomic energy


  Another name for nuclear energy
• cell


  It contains a store of chemical energy that can produce electricity (the scientific name for a battery)
• gravitational


  The kind of energy stored by anything that can fall down
• chemical energy


  The kind of energy stored in chemicals. Food, fuel and cells (batteries) all contain chemical energy
• electrical energy


  The kind of energy carried by electricity
• energy flow diagram


  A way of showing energy changes as a flow chart
• gravitational potential energy


  The kind of energy stored by anything that can fall down
• heat energy


  The hotter something is the more heat energy it has
• joule (J)


  The unit for measuring energy
• kilojoule (kJ)


  There are 1000 joules (J) in 1 kilojoule (kJ)
• kinetic energy


  The kind of energy in moving things
• Light energy


  The kind of energy given out by light bulbs, candles, etc
• machine


  Something that changes energy from one form to another
• nuclear energy


  Energy stored inside atoms
• potential energy


  The scientific word for 'stored' energy
• sound energy


  The kind of energy that is made by anything that is making a noise
• strain energy


  The kind of energy stored in stretched or squashed things which can change back to their original shapes
• transfer


  When energy is changed from one form into another we say it is transferred
• ammeter


  Measures how much electricity is flowing around a circuit
• current


  The flow of electrons around a circuit in amps
• amperes


  The unit for measuring current
• switch


  When open, the circuit is broken and there is no current flowing
• battery


  Transforms chemical energy into electrical energy
• voltmeter


  Measures voltage produced by a fuel supply
• lamp


  Glows / Lights when a circuit is complete
• resistor


  Slows down the flow of electrons in a circuit
• variable resistor


  Changes the value of resistance in a circuit
• motor


  Transforms electrical energy into mechanical energy
• LDR


  Light Dependent Resistor - changes resistance based on light levels
• fuse


  Breaks the circuit if too much current flows to prevent damage
• Density


  Mass of a material per unit volume. The amount of stuff in a given area.
• Useful Energy


  Energy that is transferred and is used for a specific purpose.
• Wasteful Energy


  Energy that is transferred that is not used for a specific purpose. Often wasted and converted to heat, heating up the surroundings.
• Volume


  A unit of three dimensional measure of space that comprises a length, a width and a height.
• Weight


  Force of gravity acting on an object/mass.
• Pressure


  Force on a certain area.
• Forms of Energy


  • Kinetic
  • Sound
  • Light
  • Chemical
  • Electrical
  • Thermal (heat)
  • Nuclear
  • Gravitational potential (GPE)
  • Elastic potential
  • Magnetic
• Kinetic Energy


  Energy in moving objects.
• Sound Energy


  Energy released by vibrating objects. The greater the vibration the greater the energy released.
• Light Energy


  Electromagnetic energy, motion of photons (light particles).