Calculation with waves

Question 1

What is the “period” of a wave?

Answer 1

• Time taken for 1 complete wave to pass a fixed point, measured in seconds.

Question 2

What is the “frequency” of a wave?

Answer 2

• Number of waves passing a fixed point per second, measured in Hertz (Hz)

Question 3

What is the equation that links period and frequency?

Answer 3

T= 1/f
Period = 1/ frequency

Question 4

What is the equation for calculating speed of a wave?

Answer 4

V= f x λ
Velocity = frequency x wavelength

Question 5

How do you measure the speed of sound in air using echos?

Answer 5

V = 2 x distance/ Time taken

Question 6

What is the speed of light?

Answer 6

3x10⁸ m/s

Question 7

What is the speed of sound in air?

Answer 7

330m/s