Wave Types
A wave where the energy and matter move parallel to one another
Longitudinal Wave
The distance between two similar points on a wave is called the
Wavelength
The material through which a wave travels is called the
Medium
Define Reflection of a wave
A wave reflects if it is bounced back or reverses directions when it encounters a medium
Which 7th grade teacher has a cat named Aurora?
Mr. Knutson
A wave where the energy and matter move perpendicular to one another
Transverse Wave
The top of a transverse wave is called the
Crest
Sound travels the fastest through which type of medium?
Solid (most dense)
Define Absorption of a wave
A wave is absorbed if it is taken in or stopped by a medium
Which 7th grade teacher just celebrated their baby's first birthday?
Mrs. Burkhalter -- happy birthday, Bennett!!
A wave that requires a medium in order to travel
Mechanical Wave
The areas of a longitudinal wave where the matter is tightly packed is called a
Compression
When the amplitude of a sound wave is decreased, what happens to the sound you hear?
It gets quieter
Amplitude = Volume
Define Transmission of a wave
A wave is transmitted if it is able to travel through a medium and continue onward
Which 7th grade teacher has been at Steffen the longest?
Ms. Zimmermann
The definition of a wave:
A wave is a transfer of energy caused by a disturbance
*transfers energy but NOT matter*
Amplitude is measured how?
From rest/equilibrium to crest or rest/equilibrium to trough
*The maximum distance away from a resting position/equilibrium that the wave particles oscillate
If a sound wave is very high pitched, what would that wave's related property be?
High Pitch = High Frequency/Short Wavelength
Explain why music rooms and recording studios often have walls lined with foam boards... what wave behavior is being used and why?
The foam is there to absorb the sound waves in order to make it quieter/reduce echoing.
Which 7th grade teacher also teachers Barre classes?
Mrs. Fischer
What are two ways that a sound wave can be classified?
Hint: Sound is both a ___________ wave and a __________ wave
Longitudinal and mechanical
What two properties of a wave are inversely related to one another?
*Hint: Inversely related means that when one is increased, the other decreases and vice versa
Wavelength and Frequency
What is the mathematical relationship between energy and amplitude?
Energy is equal to amplitude2
E = A2 or E = A x A
Why can't sound transmit through a vacuum?
Sound cannot travel in a vacuum because it is a mechanical wave; mechanical waves require a medium to travel and in a vacuum (like space) there are no particles for it to travel through.
Which 7th grade teacher recently joined our teaching team and has been teaching for 13 years?
Ms. Theune