Identify this wave: 
Longitudinal wave
What type of wave is a sound wave?
longitudinal
What type of wave is a light wave?
Transverse wave
Define the term wave
a wave is a disturbance that transfers energy through a medium or a vacuum (space)
True or False: A sound wave is a mechanical wave
True
Crest
Can sound travel in space? why?
No, there are no particles to transfer the sound
Visible light is part of the ______________ spectrum
electromagnetic
Define refraction
refraction is the bending of light rays as they enter a different medium
What type of wave needs a medium to travel through (solid, liquid, gas)
What is the distance between two troughs or two crests called?
wavelength
What causes sound?
Vibrations
The law of reflection states that ...
the angle of incidence is equal to the angle of reflection
Define reflection
reflection is the bouncing of light waves off a smooth, shiny surface (plane mirror)
What property of sound determines whether a sound is high or low?
Frequency/pitch
In longitudinal waves, the particles move ________ to the motion of the wave
Parallel
A loud sound would have a _____ amplitude.
high
As light rays enter a denser medium, they _____ ______.
slow down
Define amplitude
The distance between the farthest point of a wave and its equilibrium position
This process occurs when light bends as it moves from air into water.
refraction
Identify the direction of particle motion in a transverse wave
perpendicular; at a right angle to the motion of the wave
What is the relationship between frequency and pitch?
higher frequency = higher pitch
Convex lenses ______ light rays.
Converge
Define propagation (in relation to light and sound)
transmission of motion, light, sound, etc. in a particular direction or through a medium
Unlike sound waves, light waves can travel through this empty space.
vacuum