True or False
True or False: Does light only travel in a straight line?
False - Light can bend, bounce, bend around objects, etc.
What is the measurement of how high or low a sound wave pitch is?
frequency
What is the bending of a light wave as it passes from one medium to a different medium?
Refraction
In the Law of Reflection, what does the angle of incidence equal?
angle of reflection
What color of the rainbow has the lowest frequency and the longest wavelength?
red
True or False: Do transverse waves spread out and compact?
False transverse waves move perpendicular to the direction of the wave
Fill in the blank: The greater the amplitude _____
Hint: Sound waves
the louder the sound
What is it called when light bounces off a polish piece of glass?
Reflection
If the source and observer moved toward each other at the same speed, what will decrease?
wavelength
What is the unit of measurement for amplitude in a sound wave
decibels(dB)
True or False: Sound is a mechanical wave.
True sound needs a medium to travel through
What type of matter do sound waves travel fastest through?
Solids
What type of material does light only partially travel through?
translucent
What property of light does Snell's Law depend on?
Refraction
What color of the rainbow has the third longest wavelength?
yellow
True or False: Sound travels fastest in air
False Sound travels lowest in air at exactly 343 m/s
The receiver that pick up sound vibrations from the ear canal is called what?
Eardrum
Waves oscillate at different speeds. The ratio of the number of oscillations and time is what?
Frequency
Why can you see lighting before you hear thunder?
Because the speed of light in air(3 x 108 m/s) is faster than the speed of sound in air (343 m/s)
Which instrument has the slowest vibrations?
Whistle, Drum, Flute, or Clarinet
Drum
True or False: Amplitude deals with the volume of a sound wave
True - amplitude deals with both the loudness and volume of a sound wave
What is the speed of sound in water?
1480 m/s
What is it called when light hits a curved piece of material?
Refraction
What principle goes hand in hand with Snell's Law?
Hint: we did not learn about it
Fermat's Principle
What are 4 objects do we humans use that involve light refraction?
glasses, contacts, microscopes, and telescopes