Sound
What is a rarefaction?
A rarefaction is the region of a longitudinal wave where the particles are farthest apart.
What wave travels only through matter?
Mechanical wave
What is mechanical energy?
Mechanical energy is the sum of potential energy and kinetic energy in a system of objects.
What is the outer ear?
The outer part of your ear is shaped like a cup to collect sound waves. These waves move through the ear canal to the middle ear.
What does the optic nerve do?
It carries signals to the brain about the images you see.
What is a compression?
A compression is the region of a longitudinal wave where the particles of the medium are closest together.
What wave can travel through empty space or through matter?
Electromagnetic Wave
What is sound energy?
The energy that sound carries is sound energy.
What is the middle ear?
Sound waves from the outer ear hit against the eardrum, causing it to vibrate. These vibrations move through the middle ear to tiny bones that amplify the sound waves and transfer them to the inner ear.
What cells does the retina send?
It sends signals to the brain based on the light that strikes.
What is Pitch?
Pitch is the perception of how high or low a sound seems.
What wave makes particles of a medium move back and forth parallel to the direction the wave travels?
Longitudinal wave
What is Thermal energy?
Thermal energy is the sum of kinetic energy and potential energy of the particles that make up an object.
What is the inner ear?
Sound waves in the inner ear travel through fluid-filled chambers called the cochlea.
What does the cornea do?
It protects the eye.
What is the decibel?
Decibel is the unit used to measure sound intensity, or loudness.
A wave in which the disturbance is perpendicular to the direction the wave travels?
Transverse wave
What is electric energy?
Electric energy is the energy an electric current carries.
What are the three main parts of the human ear?
The external outer ear,the middle ear,and the the inner ear.
What is the iris?
The iris is the colored part of the eye.
What are sound waves?
Sound waves are longitudinal mechanical waves. Unlike light waves, sound waves must travel through medium.
The number of wavelengths that pass a point each second?
Frequency
What is radiant energy?
The energy that electromagnetic waves carry is radiant energy.
True/False: The cochlea converts sound waves to nerve signals.
TRUE
What does the lens help?
The lens help focus light onto the retina.