Vocabulary
The bouncing back of light when it hits a surface
Reflection
Unit for wavelength
m - meters
Girl yells into a cave and hears her echo
reflection
waves that can be seen by us
visible light
What is the relationship between frequency and pitch?
The higher the frequency, the higher the pitch
the distance from crest to crest
wavelength
Unit for frequency
Hz - Hertz
Putting a straw into a glass of water
refraction
longest wavelength and lowest frequency
radio waves
How many decibels before sound starts affecting the human ear?
100+ dB
how high or low the sound is
Pitch
Unit for speed
m/s - meters per second
Acoustic panels in an auditorium that turn the energy into thermal energy
Absorption
the sun's rays are considered this
UV - ultraviolet rays
What is the relationship between wavelength and frequency?
the longer the wavelength, the shorter the frequency
the amount of energy a sound wave carries per second through a unit area
unit for density
g/mL or g/cm^3
grams per mililiter or grams per centimeter cubed
When Ms. Flores and Mrs. Jones are talking to each other, laughing and Ms. Weir can hear it from the doors coming up the stairs
Diffraction
this type of wave is also known as invisible heat
infrared rays
Factors affecting pitch
thickness/material
the awareness of the energy of a sound
unit for loudness
dB - decibel
Hearing the 8th graders clap from the room beside us
Transmission
shortest wavelengths and highest frequency
gamma rays
Factors that affect the speed of sound
stiffness
density
temperature