AP2 NOW Flashcards
Energy
Energy
The ability to do work. Measured in Joules (J).
Power
The rate of transfer of energy. Measured in Watts (W).
Work
The energy transferred by a force.
Name all the energy stores
Kinetic Gravitational Thermal
Elastic Electromagnetic Chemical Nuclear
Conserved
When the quantity of something does not change after a process takes place.
Kinetic energy
The energy that an object possesses due to its motion
Elastic energy
The energy stored by an object when it is squashed or stretched
Gravitational energy
The energy an object has due to its position above Earth
Chemical energy
Energy stored in the bonds of chemical compoun
Thermal energy
The energy stored in a system due to its temperature.
Useful energy
Energy transferred into a form we want
Wasted energy
Energy in a form we don’t want and can’t use - normally dissipated to the surroundings as heat
Fossil fuels
Formed from the remains of ancient plants or animals. Examples are coal, crude oil and natural gas.
Nuclear
Takes energy from the splitting of atoms.
Renewable
An energy resource that can be replaced and will not run out. Examples are solar, wind, waves, geothermal and biomass.
Non-renewable
An energy resource that cannot be replaced and will be used up.
Energy resource
Something with stored energy that can be released in a useful way.
Biofuels
Any fuel taken from living or recently living organisms.
Wind
A wind turbine uses the force of the wind.
Waves
Waves are used to make a floating generator move up and down.
Hydroelectric
Uses the power of flowing water to turn turbines.
Tidal
Traps water from each high tide behind a barrage. The high tide can then be released into the sea through turbines.
Solar
Solar cells and solar panels use the Sun’s energy to generate electricity or heat water.
Cytoplasm
This is a jelly-the substerce nhere mast cherical reactions happen
