Sound Waves
The rapid moving back and forth movement of matter
What is vibration?
Which child's toy best describes a sound wave?
What is; a slinky
Light waves travel in straight paths called?
What are transverse waves
What are the three parts of a sound wave?
What are wavelength, compression, and rarefaction
The number of colors in the visible spectrum
What is: 7
The number of waves passing a given point in a given time; This determines the pitch of sound.
What is frequency?
Drums and piano are instruments in which family?
Percussion
Which is faster sound or light?
What is light
A type of energy and disturbance moving through the air.
What is sound
A device that separates white light into the colors of the visible spectrum
What is a prism?
The instrument that uses sound waves to locate objects underwater; also the technology that detects the depth, size, and distance of objects underwater by means of sound waves
What is sonar?
The distance between two compressions of a sound wave
What is a wavelength?
What is; objects reflect certain wavelengths and absorb others.
When frequency goes up what else goes up?
What is pitch
The colors of the different wavelengths of visible light
What are: red, orange, yellow, green, blue, indigo, and violet
This determines the pitch of sound.
What is: the frequency of the vibrations?
Sound travels quickest through______, less quickly through ________ and slowest through _________
Light can travel through outer space and sound cannot. Why?
What is; sound needs molecules and light does not
Describe the molecules in a solid
What is tightly packed with little space in between
The 3 things that can happen to light as it travels
What are: reflect; refract; transmitted/absorb
As the number of vibrations in a sound wave decreases the wavelengths get (longer/shorter) and the frequency gets (higher/lower)
Longer and lower
__________ is the amount of energy in a sound wave.
Amplitude
Describe transparent, translucent, and opaque
What are: all light passes through, a little light passes through, and no light passes through
Which instrument has the slowest vibrations? Flute...Drum....Whistle.... or Harmonica
What is Drum
1. This color has the longest wavelength. 2. This color has the shortest wavelength.
What are: 1. red; 2. violet