Waves

Question 1

Refraction special case

Answer 1

when light, sound, or water move from one material into another their direction does not change

Question 2

Refraction

Answer 2

is the redirection of a wave as it passes from one point to another

Question 3

Method 2 (using two microphones and oscilloscope)

Answer 3

set up the microscopes one in front of other

set the frequency of the sound to a known audible value

display the two waveforms

use wave speed (m/s) = frequency (Hz) x wavelength (m)

Question 4

Calculating speed of sound in air (Method 1) using an echo

Answer 4

measure distance from the source of the sound to the reflecting surface

measure the time interval

use speed (m/s) = distance (m) divided by time (s)

Question 5

Speed, frequency, and wavelength

Answer 5

v = wave speed (Metres per second m/s)

f = frequency (hertz, Hz)

^ wavelength (metres, m)

Question 6

Speed, distance, time

Answer 6

v = wave speed (metres per second m/s)

x = distance (metres, m)

t= time (seconds, s)

Question 7

Give two ways in which longitudinal waves and transverse waves are similar

Answer 7

they both transfer energy

they both have an amplitude

Question 8

Transverse Waves

Answer 8

Electromagnetic and Seismic S waves are transverse

particles in a transverse wave move across the direction the wave is travelling

Question 9

Longitudinal waves

Answer 9

Sound waves and Seismic P waves are longitudinal waves

the sound is travelling through move back and forth

Particles in a longitudinal wave move along the same direction

Question 10

Waves can be determined by their

Answer 10

Frequency- number of waves passing a point each second

Speed- measures in meters per second (m/s)

Wavelength and amplitude- time taken for one wavelength to pass

Question 11

Waves

Answer 11

Waves transfer energy and information without transferring matter