Question

2.1 \sound and light\ chapter quiz review
section 1: vocabulary
a change in the direction of a wave when the wave finds an obstacle or an edge, such as an opening.
the complete back - and - forth motion of an object.
the entrance to the inner ear.
a lightly stretched membrane that is the entrance to the middle ear.
a longitudinal wave caused by vibrations and carried through a substance.
a substance through which a wave can travel.
the bending of a wave as the wave passes between two substances in which the speed of the wave differs.
the combination of two or more waves that results in a single wave.
the distance between two crests or compressions next to each other in a wave.
the number of waves produced in a given amount of time.
one of the most common types of hearing loss.
a phenomenon that occurs when two objects naturally vibrate at the same frequency; the sound produced by one object causes the other object to vibrate.
in a longitudinal wave, a region of higher density and pressure.
in a longitudinal wave, a region of lower density and pressure.
word bank: compression, diffraction, eardrum, frequency, interference, medium, oval window, rarefaction, refraction, resonance, sound wave, tinnitus, wavelength, vibration
section 2: section content

1. sound is created by _.
2. a sound wave is a _ wave that is carried through a substance.
3. sound is transmitted through the _ and _ of the particles in the medium.
4. sound waves travel in _ from their source.

Explanation:

1. Diffraction: Matches the description of a wave changing direction when encountering an obstacle or edge.
2. Vibration: Defines the back - and - forth motion of an object.
3. Oval window: Is the entrance to the inner ear.
4. Eardrum: Is the lightly stretched membrane at the entrance to the middle ear.
5. Sound wave: Fits the description of a longitudinal wave caused by vibrations and carried through a substance.
6. Medium: A substance through which a wave can travel.
7. Refraction: Matches the bending of a wave as it passes between substances with different wave speeds.
8. Interference: Describes the combination of two or more waves resulting in a single wave.
9. Wavelength: Is the distance between two crests or compressions in a wave.
10. Frequency: Is the number of waves produced in a given time.
11. Tinnitus: One of the common types of hearing loss.
12. Resonance: Occurs when two objects vibrate at the same frequency and one causes the other to vibrate.
13. Compression: In a longitudinal wave, it is a region of higher density and pressure.
14. Rarefaction: In a longitudinal wave, it is a region of lower density and pressure.

For Section 2:

1. Sound is created by vibrations. Vibrations cause air molecules to move, creating sound waves.
2. A sound wave is a longitudinal wave that is carried through a substance. Longitudinal waves have particles that move parallel to the direction of the wave.
3. Sound is transmitted through the vibration and movement of the particles in the medium. The particles transfer the energy of the sound wave.
4. Sound waves travel in all directions from their source. They spread out in spherical patterns in an open environment.

Answer:

1. Diffraction
2. Vibration
3. Oval window
4. Eardrum
5. Sound wave
6. Medium
7. Refraction
8. Interference
9. Wavelength
10. Frequency
11. Tinnitus
12. Resonance
13. Compression
14. Rarefaction

Section 2:

1. vibrations
2. longitudinal
3. vibration; movement
4. all directions