P4 waves

Question 1

Longitudinal waves

Answer 1

Question 2

2 types of waves

Answer 2

longitudinal

transverse

Question 3

transverse waves

Answer 3

Question 4

Method 1 for measuring wave speed

Answer 4

Time how long it takes a wave to travel a measured distance then use the equation s=d/t. Could use ecos to measure the speed if you know the distance tot eh object ref;eating the sound and double it for there and back

Question 5

Method 2 for measuring wave speed

Answer 5

Wave speed = frequency * wavelength

measure the didtance between 2 peaks or troughs and record how many peaks or troughs pass a point in

Question 6

Speed of sound in air

Question 7

Speed of light

Question 8

Refraction

Question 9

Absorbtion

Question 10

Transmission

Question 11

Rainbows

Question 12

Ultra sound

Question 14

Infra sound

Question 15

How the ear work

Question 16

How does the choclea work

Answer 16

Vibrations from the oval window send waves through the fluid which fills the cochlea and in turn vibrates cilia, high frequencies are picked up by the long hairs at the bottom of the cochlea and low frequencies the short hairs at the top of the cochlea, also the membrane which holds the hairs are thicker and more rigid at the bottom helping pick up higher frequencies.

Question 17

Uses of ultra sound

Question 18

Sonar distance equation

Question 19

Infra sound examples