Waves 1
This type of wave vibrates matter forward and backward in the medium, in the same direction as the wave is moving.
What is a longitudinal wave?
when a wave strikes a surface and bounces off is called
What is reflection?
sound waves cannot carry energy through this
What is a vacuum?
The distance from peak to peak
What is wavelength?
What type of wave is a sound wave?
longitudinal
This type of wave vibrates matter in the opposite direction from how the wave is moving.
What is a transverse wave?
how a wave bends as it moves from one medium into another
What is refraction?
What is a medium? Give an example
material that mechanical wave needs to travel through.
solid, liquid, Gas
What part of a wave measures/determines loudness?
amplitude
If you were in outerspace, would anybody be able to hear you scream?
No. Require medium to travel through
This type of wave does not need matter to transfer energy.
What is an electromagnetic wave?
angle of incidence is 40o, what is the angle of reflection
40o
The matter that mechanical waves travel through is known as ____________.
What is a medium?
What happens when the pitch gets lower?
Frequency becomes lower; energy becomes lower
Sound waves travel the fastest in what medium? The slowest in what medium?
fastest- solids
slowest- gases
High frequency waves have _______ wavelengths.
What are SHORT wavelengths?
what will happen when the ray hits the block of clear plastic
Ray bends because it SLOWS down as it travels through a dense, solid material
Sound waves will travel faster in this kind of matter.
What is a solid?
How can you tell if a wave has a high amount of energy?
Look at the frequency.
Closer=more energy
Explain why sound waves travel the fastest in solids.
solids: particles very tightly packed therefore sound waves can vibrate off of the particles very quickly.
this part of a longitudinal wave will slow down or stop energy from being transferred
What is compression?
In what medium do light waves travel the slowest? the fastest?
slowest = solid
fastest = gas
**light SLOWS down in more dense materials **
What type of wave can travel through a vacuum?
EM Wave
(Radio, Light, UV, Infrared, Microwave)
The number of wavelengths that pass a given point per second.
What is frequency?
Explain how you would perceive the sound of a firetruck siren as it speeds towards you and speeds away from you.
towards you: short wavelength, high frequency, high pitch
away from you: long wavelength, low frequency, low pitch
DOPPLER EFFECT