Waves

Question 1

What is Wave length

Answer 1

Distance from one point on a wave to same point on the next wave

Question 2

What is amplitude

Answer 2

The maximum disturbance from its rest position

Question 3

What is frequency

Answer 3

Number of waves per second

Question 4

What is period

Answer 4

Time taken to produce one complete wave

Question 5

How do you measure speed in water

Answer 5

Ripple tank

Question 6

How do you measure speed in air

Answer 6

We Use echoes

Question 7

What does the vibration do in transverse waves

Answer 7

Vibration causing the wave is at right angles to the direction of energy transfer

Question 8

Where is energy carried on a transverse wave

Answer 8

Outwards by the wave

Question 9

What does the vibration do in longitudinal waves

Answer 9

Vibration causing the wave is parallel to the direction of energy transfer

Question 10

Where is energy carried on a longitudinal wave

Answer 10

Along the wave

Question 11

Example of a transverse wave

Answer 11

Water and light waves

Question 12

Example of a longitudinal wave

Answer 12

Sound waves

Question 13

What letter is a transverse wave

Answer 13

S

Question 14

What letter is a longitudinal wave

Answer 14

P

Question 15

What is an electromagnetic wave

Answer 15

Short wavelengths have high-frequency and high-energy

Question 16

Black surfaces

Answer 16

Good emitters

good absorbers

Question 17

White sufaces

Answer 17

Poor emitters

Poor absorbers

Question 18

shiny surfaces

Answer 18

Good reflectors

Question 19

Danger of radio waves

Answer 19

none

Question 20

Danger of microwaves

Answer 20

Burning if concentrated

Question 21

Danger of infrared waves

Answer 21

Burning if concentrated

Question 22

Danger of visible

Answer 22

Damaged eyes

Question 23

Danger of ultraviolet waves

Answer 23

Sunburn

cancer

Question 24

Danger of x-rays

Answer 24

Cell destruction cancer mutation

Question 25

Danger of gamma waves

Answer 25

Cell destruction cancer mutation

Question 26

Example of radio waves

Answer 26

Communications TV radio

Question 27

Example of microwaves

Answer 27

Mobile phones cooking satellites

Question 28

Example infrared waves

Answer 28

Heating remote controls cooking

Question 29

Example of visible

Answer 29

Photography Fibre optics Illumination

Question 30

Example of ultraviolet waves

Answer 30

Security marking | Disinfecting water

Question 31

Example x-ray

Answer 31

Broken bones | airport security

Question 32

Example of gamma

Answer 32

Sterilising detecting and killing cancer

Question 33

Do EM waves refract

Answer 33

Yes

Question 34

Partially reflected off boundry

Answer 34

Ultrasound

Question 35

Reflected off objects

Answer 35

Sonar

Question 36

Why are sonars used

Answer 36

To determine depth of object under the sea

Question 37

Why are ultrasounds USED

Answer 37

Medical foetal scans

Question 38

What is wave speed measured in

Answer 38

m/s

Question 39

What is wavelength measured in

Answer 39

m

Question 40

What is frequency measured in in

Answer 40

Hz

Question 41

What is period Measured in

Answer 41

seconds