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A material the transfers energy freely
medium
A material that refused/prevent transfer of energy
insulator
how do you calculate electric current
voltage/resistance
electric charges at rest (“build up”);generally produced by friction/induction
static electricity
Area of magnetic force around a magnet
magnetic field
what happen when you place 2 north poles together
they repel
What happens to the magnetic domain when a material is magnetized
they align in the same direction
Why do compasses point north
Earth’s magnetic field
interaction between electricity and magnetism
electromagnetism
a device that turns mechanical energy into electricity
generator
a wave in which the particles of the medium vibrate perpendicularly to the wave direction
transverse wave
what factors determine wave speed
medium determine wave speed
a bouncing back of a wave when it hits a surface through it cannot pass
wave reflection
The bending of a wave as it passes at an angle from one medium to another
refraction
A closed or complete, path in which an electric current travels is an ___
electric circuit
what is the term for bending of waves around obstacles
diffraction
highest point of wavelength
crest
how is electricity and magnetism related?
Electric current generates magnetic fields and Changing magnetic fields create electricity
how do surface waves move matter?
Circular motion
what happens to light as it travels through air?
diffraction, reflection, energy loss
lighting seen before thunder
light travels faster than sound
what happens to a sound wave when it interacts with matter?
reflected, absorbed, or transmitted
a change in sound frequency caused by motion of Sound Source motion of the listener or both
Doppler effect
what is the distance between 2 crest of a wave
wavelength
in a longitudinal wave the areas where the particles are closest together are called
compressions
Note 
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