waves

Question 1

How do you calculate the time period of a full cycle of a wave?

Answer 1

Time period= 1/frequency
T=1/f

Question 2

How do you calculate speed?

Answer 2

Speed= distance/ time
V=d/t

Question 3

How do you calculate the speed of a wave?

Answer 3

v= f λ
wave speed = frequency × wavelength

Question 4

What is the rest postion?

Answer 4

Particles or fields when they aren’t vibrating

Question 5

what is displacement?

Answer 5

Distance that a point, in the medium, has moved from it’s rest position

Question 6

Define the peak of a wave

Answer 6

Highest point above the rest position

Question 7

Define the trough of a wave

Answer 7

Lowest point below the rest position

Question 8

Define amplitude

Answer 8

The height of the wave from the peak to the mid point

Question 9

Define wavelength

Answer 9

the distance between two successive points
(peak-peak or trough-trough)

Question 10

Define time period

Answer 10

Time taken for one oscillation

Question 11

Define frequency

Answer 11

The number of waves per second

Question 12

what two words are used to describe waves?

Answer 12

Oscillations
Vibrations

Question 13

what is the job of a wave?

Answer 13

To transfer energy between stores

Question 14

Complete the sentence:
Sound waves cause air particles to vibrate ____ and _____.

Answer 14

Back
Forth

Question 15

Complete the sentence:
Ripples cause _____ particles to vibrate __ and ____.

Answer 15

Water
Up
Down

Question 16

What is a longitudinal wave?

Answer 16

Parallel vibrations to direction of wave travel

Question 17

What is a transverse wave?

Answer 17

Perpendicular vibrations to direction of wave travel

Question 18

What are mechanical waves?

Answer 18

Oscillations of particles in a solid, liquid, or gas.
(Extra info: It must have a medium to travel through)

Question 19

What are Electromagnetic waves?

Answer 19

Oscillations in and electric or magnetic field

Question 20

What is the unit for wave speed?

Answer 20

meters per second- m/s

Question 21

What is the unit for frequency?

Answer 21

Hertz- Hz

Question 22

What is frequency (λ) measured in?

Answer 22

Meters

Question 23

True or false:
Sound is faster than light?

Answer 23

False

Question 24

True or false:
Light is faster than sound?

Answer 24

True

Question 25

When sound is created, air particles vibrate and collide with each other. Why is this?

Answer 25

The vibrations pass through the air particles

Question 26

What is the accepted value for the speed of sound in the air?

Answer 26

330 m/s

Question 27

What is the aim when doing a ripple tank practical?

Answer 27

To measure the frequency, wavelength, and the speed of waves in the tank

Question 28

What are the risks/hazards of the Ripple Tank practical?

Answer 28

Electrical components are near water- could cause shock and damage to components.

Question 29

True or false:
Longitudinal waves show areas of compression and rarefaction

Answer 29

True

Question 30

Define compression:

Answer 30

Areas of high pressure due to particles being close together

Question 31

Define rarefaction:

Answer 31

Areas of low pressure due to particles being spread further apart

Question 32

What is echolocation?

Answer 32

The prime mechanism that is behind or responsible for sonar.

Question 33

What does Sonar stand for?

Answer 33

Sound, navigation, and, ranging

Question 34

The time difference between transmitting and receiving the final time - the initial time.

Answer 34

Δt= ts -ti