p6 waves

Question 1

what is the EM spectrum

Answer 1

radio
micro
infared
visible light
UV
X-Ray
Gamma

Question 2

what is an example of longitudinal waves

Answer 2

sound waves in air

Question 3

what is an example of a transverse wave

Answer 3

waves on a string
EM waves

Question 4

how do you measure waves in a ripple tank

Answer 4

use signal generator attatched to a dipper
dim lights and turn on lamp
measure distance between waves that are 10 wavelengths apart divide by 10 to find 1 wavelength

Question 5

how to measure speed of sound

Answer 5

set up oscilloscope so that detected waves are shown as seperate
start with microscopes next to speaker and slowly move apart
measure distance between microphones to find 1 wavelength

Question 6

what are radio waves used for

Answer 6

communication

Question 7

how do EM waves travel

Answer 7

they all travel at the same speeds through air and vacuums

Question 8

what happens when a wave is absorbed

Answer 8

wave transfers energy to the materials stores

Question 9

what happens when a wave is transmitted

Answer 9

wave travels through the new materials often leads to refraction

Question 10

what happens when a wave is reflected

Answer 10

sent back away from the second material echoes created

Question 11

what is the walking speed

Answer 11

1.5m/s

Question 12

what is the running speed

Answer 12

3m/s

Question 13

Cycling

Answer 13

6 m/s

Question 14

car

Answer 14

25m/s

Question 15

train

Answer 15

30m/s

Question 16

what is gravitational force

Answer 16

force of attraction between masses

Question 17

what is weight

Answer 17

force acting on an object due to gravity