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travis's flashcards
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20
Science
7th Grade
01/05/2012

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Term
What's the definition of a wave?
Definition
A traveling disturbance that carries energy from one place to another.
Term
what are they created by?
Definition
vibrating source.
Term
what do they carry?
Definition
they carry energy but not matter.
Term
what is a Mechanical wave?
Definition
needs a medium to travel.
Term
what is a Electromagnetic wave?
Definition
electromagnetic waves don't need a medium.
Term
what are the parts of a wave?
Definition
wavelength, crest, amplitude, trough.
Term
what's frequency?
Definition
complete waves per unit of time.
Term
what's the movement of wave energy and particals?
Definition
at right angles.
Term
what is the relationship between wavelength and frequency?
Definition
have an inverse.
Term
what way does the wave energy and particals move?
Definition
parallel.
Term
what type of wave is a light wave?
Definition
transverse.
Term
what are light waves created by?
Definition
the motion of electrons in an atom.
Term
what type of wave is a sound wave?
Definition
longitudinal.
Term
what are sound waves created by?
Definition
vibrations.
Term
what type of wave are water waves?
Definition
a combination of longitudinal and transverse.
Term
what are water waves created by?
Definition
wind created an unequal surface on the water.
Term
what type of waves is a seismic waves?
Definition
a transverse and longitudinal.
Term
what are seismic waves created by?
Definition
the movement of the earth's plates.
Term
can energy be created or destroyed?
Definition
no.
Term
what are definations of a wave
Definition
tuning forks, waves hitting a beach ect......
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