Learning Targets:
•I can develop a model of waves to describe patterns in amplitude and wavelength.
•I can analyze and develop models that demonstrate how light travels and how it
interacts with different surfaces.
•I can explain that sound is a result of vibration
•I can describe pitch as a difference in sounds that are produced and relate that to the
rate of vibration.
Vocabulary to Know:
SOUND
•Wavelength- the distance between one point
on a wave and the identical point on the next
wave.
•Amplitude-how much energy is in a wave.
•Frequency- the number of waves that pass in
a second.
•Pitch- how high or low a sound is.
•Volume- how loud or soft a sound is.
LIGHT
•Transparent- allows MOST light to pass
through.
•Translucent- allows SOME light to pass
through
•Opaque- allows NO or VERY LITTLE light to
pass through
•Reflection- the bouncing of light off an
object.
•Refraction- the bending of light through an
object.
•Absorption- the taking in of light by an
object.
a) Transmission (goes through the object; ex. Glass)
b) Absorption (light stops or is taken in by opaque object)
c) Reflection (light hits smooth object and bounces back;
ex. mirror)
Colors of the light
spectrum:
ROY G BIV
Refraction is the bending of light. When light
travels through a different type of matter such as
the water seen above, it can bend. This is
because light travels fastest through a gas, but
slows down when it moves through a liquid or
solid. It causes the straw above to look broken or
bent.
Need to Know:
-how to change pitch on an
instrument
-how to change volume on an
instrument