waves
a material that waves can travel through
medium
formula to calculate speed
s= d/t
a simple machine that has a bar that pivots at a fixed point
lever
a material through which charges can move freely
conductors
How high or low a sound is
pitch
the top and bottom of a wave
crest and trough
formula to calculate work
w=F x d
a simple machine that has a grooved wheel that holds a rope on a cable.
pulley
a material through which charges cannot move easily
insolators
unit used to measure loudness of sound
decibel
a wave that requires a medium
mechanical wave
the formula to calculate an objects kinetic energy
1/2mv*2
straight slanted surface
inclined plane
a complete closed path through which electric charges can flow
Electric circuit
sound waves are ___________ waves
Longitudinal waves
a wave that can travel without a medium
electromagnetic wave
how to find an objects gravitational potential energy
mgh
an inclined plane that is wrapped in a spiral around a cylinder
screw
in this type of circuit electrons have more than ono path to follow.
parallel circuit
three primary colors of light
green red and blue
waves can be _________________ or ______________
longitudinal or transverse
formula to calculate power
p=E/t
a pair of inclined planes that move
wedge
in this type of circuit all parts are connected in a row that forms one path for electric charges tp flow
series circuit
parts of the electromagnetic spectrum in order from lowest frequency to highest frequency
radio waves, microwaves, infrared light, visible light, ultraviolet light, gamma rays