Module 3

Question 1

(Blank is a type of periodic motion

Answer 1

Simple Harmonic Motion

Question 2

(Blank)is the basic concept for measuring amplitude and frequency of your voice

Answer 2

Simple Harmonic Motion

Question 3

Spring example :
Simple harmonic motion is typical for motion of the mass on the spring when it is subject to a ______ restoring force.

Answer 3

Linear elastic

Question 4

Spring example :
it demonstrates a single frequency, or ____ cycle .
remember compression and rarefaction

Answer 4

one

Question 5

Spring example:
A sine wave or sinusoid is mathematical curve that describes a smooth repetitive oscillation . A sine wave is a _______ wave.

Answer 5

Continuous

Question 6

In term of Simple Harmonic Motion , the y - axis represents

Answer 6

Displacement

Question 7

In term of Simple Harmonic Motion, the x- axis represents

Answer 7

Time

Question 8

one cycle includes

Answer 8

Compression and rarefaction

Question 9

( Blank) is a measure of strength or magnitude of sound waves
-It can be expressed in terms if sound pressure or power
* represents since wave *
- on the y axis

Answer 9

Amplitude (A)

Question 10

(Blank) is the rate (in Hz) at which a sinusoid repeats itself.
- Cycle per sec.
* represents since wave *

Answer 10

Frequency (f)

Question 11

(Blank or Blank ) is the amount of Time - in seconds - that it requires for a sinusoid to complete one cycle
* represents since wave *

Answer 11

Period or Time (T)

Question 12

Relationship between frequency and period =

Answer 12

an inverse relationship meaning if one is high than the other one is low and vice versa F=1/t or t=1/F

Question 13

( Blank) is the frequency with which a certain system naturally vibrates .

Answer 13

Natural Frequency

Question 14

The frequency of the vibration of a wire( different than VFs) increases when :
1. its length _______
2. its tension_______ and or
3. its mass ________

Answer 14

1. its length ___decreases____
2. its tension____increases ___and or
3. its mass _____decreases___

Question 15

What is concerned with the timing relationships between individual sinusoid s?

Answer 15

Phase

Question 16

( Blank) refers to the position of the sinusoidal motion. This particularly of Nate when there is more than one sinusoid

Answer 16

Phase

Question 17

What are the three different ways to discuss phases ?

Answer 17

1. In phase : sinusoid starts together > 0 degrees
   2/ 90 degrees of of phase : one signal starts 1/4 of a cycle ahead of the other signals
2. 180 degrees out of phase : one signal starts 1/2 of a cycle ahead of the other and cancels it out

Question 18

(Blank) is the distance traveled by a sound wave during one period of vibration ( length )
- you can measure between any two points with the same phase

Answer 18

Wavelength

Question 19

λ = v/f , s is speed of _____ in air

Answer 19

sound

Question 20

Wavelength shows relation of 2 rates
1 ______
and
2 _____

Answer 20

1. frequency
2. amplitude

Question 21

______ relationship as frequency increases -> wavelength decreases

Answer 21

Inverse

Question 22

_____ occurs because of restraint of the air medium and internal friction in the system .

Answer 22

Damping

Question 23

The internal friction is _____ energy that relates to heat

Answer 23

Kinetic

Question 24

The ____ of sound waves is the rate at which the particles vibrate back and forth each second

Answer 24

Frequency

Question 25

______ is the time between successive points of low and high pressure .
- A sound wave with high frequency will have a small period while a sound wave with a low frequency will have a lager period

Answer 25

Period