science 8 2
Terms
undefined, object
copy deck
- engery
- a ablity to do work
- kinetic
- engery of motion;depends on speed and mass
- potential engery
- energy of position or shape
- mechanical engery
- the total engery of motion and position of an object.
- engery conversion
- a change from one form of engery into another
- energy resource
- a natural resourse that can be converted by humans into other forms of engery in order to do useful work.
- nonrenewable resource
- a natural resourse that cannot be replaced -only in a billon years.
- renewable resource
- a natural resourse that can be reused and replaced over a short period of time.
- wave
- a disturbance that transmitts engery through matter or space.
- medium
- is a substance through which a wave can travel,solid or liquid
- electromagnetic wave
- waves that do not require a medium
- kinetic engery formulas
-
mv2
----m-mass
2 v-object's speed - the law of conservation of engery
- engery can be neither created nor destroyed
- thermal
- is the total kinetic energy of the particies that make up an object
- chemical
- chemical engery in the food you eat is a result of the sun's engery.
- sound engery
- is caused by an obect's vibrating
- electrical
- listen to the radio make toast -turns into forms of energy
- nuclear
- changes in the nucleus of an atom.when two or more nuclei join together or splits apart.--electrical endergy
- light
- is produced by the vibrations of electrically charged particles -vacuum
- gravitational potential engery
- (N.M)or joules (j)-weight x height