Types of Waves
medium
How often a wave occurs in a given period
(or the number of wave cycles per second)
When a wave bounces after hitting a barrier, that is an example of...
reflection
True/False: Do you have a blind spot
True
Explain the pinna and its shape.
The pinna is the outer, flappy part of your ear. It has curves and folds to act like a funnel to effectively gather sound waves and direct them into the ear canal.
Transerve wave (up and down motion)
How do you measure wavelength in a longitudinal wave?
From compression to compression, or rarefaction to rarefaction.
Solar panels are usually made of black materials instead of lighter-colored materials. Why is black the best color to use to collect solar energy?
Black materials absorb the most light waves from the Sun.
What is the function of the optic nerve?
Transmits electrical impulses from the retina to the brain, takes the inverted image, and flips it so we can see.
Give an example of how hearing loss can occur.
Sound waves travel best in which medium?
They travel fastest in a solid, like metals, where molecules are tightly packed.
If a sound wave has a small amplitude and low frequency, describe its energy, pitch, and loudness.
Low energy, low pitch, soft volume
When a wave enters into a different medium, what happens to the wave?
The wave slows down and bends slightly as it enters a different medium. This is called refraction.
Where is your lens located and what does it do?
Your lens is located right behind your pupil and allows you to see objects near and far.
What are the four parts in your middle ear and how do they contribute to how we hear sound waves?
Sound waves vibrate the eardrum, which causes the 3 bones called the hammer, anvil, and stirrup to vibrate. These bones act as levers to increase the vibrations 22 times.
Electromagnetic waves are always ______________ waves.
transverse waves
If a visible light wave has a very high frequency, describe its energy, wavelength, and color.
High energy, short wavelength, indigo/violet
Jenna puts on a pair of sunglasses on a bright, sunny day to reduce how much light travels to her eyes. Objects that allow some light to pass through are called...
Translucent
What do the rods and cones do inside of the retina?
Rods are responsible for vision at low light levels. Cones are responsible for detecting colors.
What is the function of the inner ear region?
to convert sound waves into nerve impulses to send to the brain
How are electromagnetic and mechanical waves similar?
a. They both absorb energy
b. They both need a medium to travel
c. They both can travel through a vacuum
d. They both transfer energy
d. They both transfer energy
If a wave gains more energy transfer, will its wavelength get longer or shorter?
The wavelength will get shorter because it will have a higher frequency.
The bending of waves around a barrier or through an opening/gap.
What part of your eye is responsible for control the amount of light that enters your eye?
What is the cochlea and how does it function?
The cochlea, a snail-shaped structure in the inner ear, functions by converting sound vibrations into electrical impulses through tiny hair cells lining its interior, which then send these signals along the auditory nerve to the brain. When sound waves enter the cochlea, the fluid inside ripples, causing the hair cells to move and generate electrical signals based on the frequency of the sound.