Sound v1
Through sound waves that travel through the air and toward your eardrum, causing it to vibrate.
How does sound reach the ear?
Type of wave in which matter in the medium moves back and forth at right angles to the direction that the wave is traveling.
What is a transverse wave?
A wave has a frequency of 3.2 Hz with a wavelength of 10 m. What is the velocity of the wave?
v=32 m/s
What is echolocation?
Flat, smooth mirror in which an image appears upright.
What is a Plane Mirror?
This section of the ear absorbs compressional sounds waves through vibration.
What is the Outer Ear?
Type of wave in which matter in the medium moves back and forth in the same direction that the wave is traveling.
What are longitudinal (or compressional) waves?
A wave travels 1.5 m/s with a frequency of 0.45 Hz. What is the wavelength of the wave?
wavelength=3.33 m
Depends on temperature and state of medium
What determines the speed of sound?
Mirror surface is curved inward.
What is a Concave Mirror?
The inner ear contains the ______, which sends electrical signals to the auditory nerve when moved.
What is the cochlea?
The measurement between the base line of a wave and the crest.
What is amplitude?
The period of a sound wave is 0.002 seconds. The speed of sound is 344 m/s. Find the frequency and wavelength of the sound wave.
frequency=500 hz, wavelength=6.88m
What is sonar?
Mirror curved outward, diverging light rays when reflected.
What are Convex Mirrors?
This section of the ear contains three bones, which amplify sound waves.
What is the middle ear?
The larger the amplitude, the _________ the sound.
What's louder?
Two factors that affect wave speed?
Hollow chambers in instruments that amplify sound when air inside vibrates. Ex) Guitars/Violins.
What are Resonates
Uses two convex mirrors with short focal lengths to magnify small, close objects.
What are microscopes?
Name three bones that are found in a section of the ear that amplifies sound waves?
What are the hammer, anvil and stirrup?
The greater the ________, the higher the pitch.
What is frequency?
What is the formula for finding wave speed?
velocity=wavelength x frequency
High frequency sound waves.
What are ultrasounds?
Use mirrors and lenses to gather light from far away objects than the eye does naturally.
What are telescopes?