key word and definitons

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amplitude
the height of a wave crest positionor a wave trough of a transverse wave from the rest
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angle of incidence
angle between the incident ray and the normal
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anomalous results
results that do not match the pattern seen in the other data collected or are well out side the range of other repeate readings. they should be retested and if necessary discarded.
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band
part of the radio and microwave spectrum used for communications.
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bar chart
a chart with rectangular bars with lengths proportional to the values that they represent. the bars should be of equal width and are usually plotted horiontally or vertically. also called a bar graphy.
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base load
constant amount of electricity generated by power stations
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big bang theory
the theory that the universe was created in a massive explosion (the big bang) and that the universe has been expanding ever since.
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blue shift
decrease in the wavelenght of electromagnetic waves emmited by a star or galaxy due to its motion towards us. the faster the speed of the star or galaxy, the greater the blue shift is.
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condence
turn from vapour into liquid
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conduction
transver of energy from partical to partical in matter.
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conductor
material/object that conducts
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consservation of energy
energy can not br created or destroyed
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control group
if an experiment is to determine the effect of changing a single varible, a control is often set up in which the independent varible is not changed, thus enabling a comparishion to be made. irf the investigation is of the survey type a control group
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convection
transfer of energy by the bulk movement of a heated fluid.
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convection current
the circular motion of matter caused by heating in fluids.
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copper rich ore
rock that contains a high proportion of a coper compound.
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cosmetic microwave background radiation
electromagnetic radiation that has been traveled through space ever since it was created shortly after the big bang.
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cost effectiveness
how much something gives value for money when purchase, running and other costs are taken into account.
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data
information, either qualitative or quantitative, that have been collected
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density
mass per unit volume of a substance.
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diffraction
the spreading of waveswhen they pass through a gap or around the edges of an obstical which has a similar sie as the wavelength of the waves.
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diffusion
spreading out of particles away from each other.
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directly proportion
a relationship that, when drawn on a line graph, shows a positive linear relationship that crosses through the origin.
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doppler effect
the change of wavelength (and frequency) of the waves from a moving source due to the motion of the source towards or awaty from the observer
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efficiency
useful energy transvered by a divicedivide total energy supplied to the device.
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elastic potential energy
energy stored inn an elastic object when work is done to change its shape.
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electrical applience
machine powerd by electricity.
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electrical energy
energy transfered by the movement of electrical charge
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electricity meter
meter in a home that measures the amount of electrical energy supplied.
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electrolysis
the breakedown of a substance containing ions by electricity.
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electromagnetic spectrum
a set of radiations that have different wavelengths and frequencies but all travel at the same speed in a vaccume.
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electromagnetic wave
electro and magnetic disturbance that transfers energy from one place to another. the spectrum of electromagnetic waves, in order of increacing the wavelength, is as followes: gamma and xrays, ultra violet, visible light, infrared radiation,microwa._
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emmit
gives out radiation
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emmiter
a substance that gives out radiation.
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energy level
see shell
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energy transfer
movement of energy from one place to another or one from to another.
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Other cards in this set

Card 2

Front

angle between the incident ray and the normal

Back

angle of incidence

Card 3

Front

results that do not match the pattern seen in the other data collected or are well out side the range of other repeate readings. they should be retested and if necessary discarded.

Back

Preview of the back of card 3

Card 4

Front

part of the radio and microwave spectrum used for communications.

Back

Preview of the back of card 4

Card 5

Front

a chart with rectangular bars with lengths proportional to the values that they represent. the bars should be of equal width and are usually plotted horiontally or vertically. also called a bar graphy.

Back

Preview of the back of card 5
View more cards

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