3a- waves ) Units

Question 1

Frequency symbole

Answer 1

Frequency

Hertz

symbole: Hz

Question 2

wavelength symbole

Answer 2

Wavelength

Metre

m

Question 3

wavelegth symbole

Answer 3

Wave Speed

Metre per second

m/s

Question 4

wavelength symbole

Answer 4

Time Period

Second

s

Question 5

what does this unit represent Hertz

Answer 5

Hertz (Hz): Measures frequency, the number of wave cycles per second.

Question 6

what does this unit represent Metre

Answer 6

Metre (m): Measures wavelength, the distance between successive wave crests or troughs.

Question 7

what does this unit represent Metre per second

Answer 7

Metre per second (m/s): Measures wave speed, how fast a wave travels through a medium.

Question 8

what does this unit represent Second

Answer 8

Second (s): Measures time, including the period of a wave (the time for one complete cycle).

Question 9

what does this unit represent Degree

Answer 9

Degree (°): Measures angles, used in wave reflection and refraction.

Question 10

Law of Reflection:

Answer 10

O i = O r
Angle of incidence = Angle of reflection)

Question 11

Practical: Measuring Wave Properties

Measuring the Speed of Sound in Air

Answer 11

Method: Use two microphones connected to a timer and measure the time taken for sound to travel a known distance.

Calculation: Use v=d/t to find wave speed.

Question 12

Practical: Measuring Wave Properties
Investigating Frequency and Wavelength in Water Waves

Answer 12

Method: Use a ripple tank to measure wavelength and frequency of waves on water.

Observation: Use wavespeed equation to calculate wave speed