Waves

Question 1

What is the amplitude of a wave

Answer 1

The maximum displacement of a point on the wave from its undisturbed position

Question 2

What is the wavelength

Answer 2

The distance between the same point on two adjacent waves

Question 3

What is the frequency

Answer 3

The number of complete waves passing a certain point per second, measures in Hz

Question 4

Equation linking frequency and period

Answer 4

1= Txf

f= frequency (Hz)
T= period (s)

Question 5

What do all waves have to be

Answer 5

Transverse or longitudinal

Question 6

What ways do the transverse waves oscillate

Answer 6

Perpendicular to the direction of energy transfer
—>up and down

Question 7

Example of transverse waves

Answer 7

electromagnetic waves

Question 8

What way do longitudinal waves oscillate

Answer 8

Parallel to the direction of energy transfer
—>left and right

Question 9

Example of longitudinal waves

Answer 9

Sounds waves

Question 10

Equation linking frequency, wave speed and wage length

Answer 10

v=f λ

V= wave speed (m/s)
λ= wave length (m)

Question 11

How can u use an oscilloscope to measure the speed of sound

1. Set up the o… so the detected w… at each m… are shown as s… waves
2. Start with both m… next to the speaker than slowly move one a… until the two waves are a… on the d…
3. Measure the d… between the m… to find one w…
4. Use the formula v= to find the s… of the waves

Answer 11

1. Set up the oscilloscope so the detected waves at each microphone are shown as separate waves
2. Start with both microphones next to the speaker than slowly move one away until the two waves are aligned on the display
3. Measure the distance between the microphones to find one wavelength
4. Use the formula v=f λ to find the speed of the waves

Question 12

How fast does the speed of sound in air travel

Answer 12

330m/s

Question 13

Wave practical

1. Equipment list: v… transducer, string, b…, signal g…, p…, masses
2. Turn on the signal … and vibration …
3. Adjust the f… of the signal g… until there is a clear w… in the string
4. Measure the w… of these waves using a …
5. Use the formula v=.. to find the s… of the wave

Answer 13

1. Equipment list: vibration transducer, string, bench, signal generator, pulley, masses
2. Turn on the signal generator and vibration transducer
3. Adjust the frequency of the signal generator until there is a clear wave in the string
4. Measure the wavelength of these waves using a ruler
5. Use the formula v=f λ to find the speed of the wave