Exam 1

Question 1

Simplest form of sound

Answer 1

Sine wave

Question 2

Acceleration of objects is directly proportional to but…

Answer 2

Opposite in direction to displacement.

Question 3

Magnitude of the restoring force is…

Answer 3

GREATER the more it is stretched.

Question 4

Pure tone

Answer 4

Sine wave represents vibratory movement associated with the simplest sound.

Question 5

SHM: The Swing

Answer 5

Greatest as it passes equilibrium

Question 6

Period

Answer 6

How long it takes for an object to complete 1 cycle.

Question 7

Frequency

Answer 7

Number of cycles an object completes per second (Hz)

Question 8

Force and distance

Answer 8

Farther you go, the more (elasticity) it takes to get back.

Question 9

Wavelength

Answer 9

Distance over which the wave starts at a point on one curve, goes through an entire cycle.

Question 10

Sound

Answer 10

Disturbance in the particles of an elastic medium that propagates through the medium as a longitudinal wave.
FORM OF ENERGY (light, heat, sound)

Question 11

What does sound require?

Answer 11

Source and Medium

Question 12

Medium for sound…

Answer 12

AIR

Question 13

Sound has which aspects?

Answer 13

PHYSICAL and PSYCHOLOGICAL

Question 14

Sound does not travel…

Answer 14

It propagates!

Question 15

Not skipping generations…

Answer 15

Sound must go from particle to particle in a medium.

Question 16

Tuning forks

Answer 16

Movement/vibration of the forks compresses the air and creates higher density and pressure.
Elasticity creates the pitch of the sound.

Question 17

Sound in the ear

Answer 17

Outer ear: sound waves
Middle ear: vibrations
Vibrations cause the hairs on the cells of the cochlea to move. This creates nerve signals that the brain understands.