Waves

Question 1

What are longitudinal waves

Answer 1

Are oscillations that mice left to right, parallel to the direction of energy transfer. They show areas of compressions ad rarefactions

Question 2

What are transverse waves

Answer 2

Transverse waves are oscillations that move up and down, perpendicular to the direction of energy transfer.

Question 3

Examples of longitudinal waves

Answer 3

• sound waves
• seismic p waves
• ultrasound waves

Question 4

Examples of transverse waves

Answer 4

• water ripples
• all of the waves on the electromagnetic spectrum
• seismic S waves

Question 5

What are electromagnetic waves

Answer 5

They are waves which transfer radiation from the source of the waves to the absorber. they can travel through a vacuum, and travel through space at the same speed that they travel through the air

Question 6

The electromagnetic spectrum

Answer 6

Lowest frequency = radio waves
- microwaves
- infrared waves
- visible light
- Ultraviolet waves
- X rays
Highest frequency = Gamma rays

Question 7

What type of waves are electromagnetic waves

Answer 7

They are transverse

Question 8

Formula for wave speed

Answer 8

Wave speed = frequency x wavelength

Question 9

Frwuqajcne y is equal to

Answer 9

Frequency = velocity / wavelength

Question 10

Speed is equal to

Answer 10

Speed = frequency x wavelength

Question 11

What is the defection of wavelength

Answer 11

The distance from one of the wave to the small point on another wave. Eg where the waves begin to repeat themselves

Question 12

What is frequency

Answer 12

The number of complete waves that pass thought a given

Question 13

Amplitude

Answer 13

Half the distance from peak to trough

Question 14

Wave speed

Answer 14

How quickly the wave travels from its source

Question 15

Uses of radio waves

Answer 15

Communications, in phones, in radios

Question 16

Uses of microwaves

Answer 16

In phones, for communication

Question 17

Uses for infared waves

Answer 17

Used in remote controls, and electrical heaters

Question 18

What are ultraviolet waves used for

Answer 18

Killing bacteria, suntanning

Question 19

Uses of radio waves

Answer 19

Images inside body

Question 20

Gamma waves

Answer 20

Dis infection and sterilisation

Question 21

What happens to sound waves in water

Answer 21

In water, sound waves have the same frequency, increased speed and increased wavelength

Question 22

If the frequency increases

Answer 22

The speed stays the same and the wavelength decreases

Question 23

What type of waves are light

Answer 23

Transverse

Question 24

How do ultrasound waves work, and why are they used more frequently than X-ray waves

Answer 24

Ultrasound waves work by sending waves through the body. The waves are then reflected back up. The longer it takes for the waves to be reflected back up, the thicker the tissue or organ is. The reason why ultrasound waves are used more frequently that X-ray waves us because X-ray waves can be dangerous to the human body, and X-rays only show bones. Not organs