Sound And Light

Question 1

Plane Mirror

Answer 1

A Mirror that is perfectly flat.

Question 2

Refraction

Answer 2

When light rays slow down when they travel through a different medium. As a result of this, the light bends. E.g Air to water.

Question 3

Cornea

Answer 3

It reflects light onto the Retina and protects it.

Question 4

Oscillation

Answer 4

This transfers energy or information about waves.

Question 5

Speed of Sound

Answer 5

The Seed of sound travels quicker through solids, than liquids and gases.
Solids:5,000 m/s
Liquids:1,500 m/s
Gases: 340 m/s

Question 6

Specular Refection

Answer 6

A Refection off a smooth surface.

Question 7

Lens

Answer 7

There a Convex and Concave. A Convex lens is the type of lens that reflects light to the Retina. E.g If you are Short-Sighted you will need Concave lensed glasses to help fix it.

Question 8

Pitch

Answer 8

How high or low a sound is.

Question 9

Audible Range

Answer 9

20Hz-20,000Hz (20kHz)

Question 10

Diffuse Scattering

Answer 10

A Reflection off a rough surface.

Question 11

Retina

Answer 11

The Retina is at the back of you eye. It flips the image you are seeing back over so it is the right way round. It then send this image to the brain.

Question 12

Amplitude

Answer 12

The distance between the bottom and top of a Transverse Wave.

Question 13

Vacuum

Answer 13

When all of the gas particles are sucked out of a certain container.

Question 14

Law of Refection

Answer 14

The ray that hits an object is the Incidence ray. The one that bounces off it is called the Reflected Ray. The is an imaginary line at 90 degrees in the middle of the two. This line is called the normal.

Question 15

Convex Lens

Answer 15

A Convex Lens is converges light (reflects it inwards).

Question 16

Frequency

Answer 16

The frequency of a wave is how many waves there are per second.

Question 17

Ultrasound

Answer 17

When a sound is more than 20,000 Hz

Question 18

Incident Ray

Answer 18

The initial ray that that hits a mirror.

Question 19

Concave Lens

Answer 19

This lens bends light outwards.

Question 20

Wavelength

Answer 20

The distance between the start of 2 waves.

Question 21

Echo

Answer 21

When a sound waves bounces off an solid object.

Question 22

Reflected Ray

Answer 22

The ray the is created of the reflection of an incident ray

Question 23

Dispersion

Answer 23

When light travels through an object and spilts up into a spectrum (all the colours of the rainbow)

Question 24

Transverse Wave

Answer 24

Light rays are displayed in this way.

Question 25

Reverberation

Answer 25

When lots of echos are joined together.

Question 26

Spectrum

Answer 26

When light splits up into all of the colours of the rainbow.

Question 27

Angle of Refraction

Answer 27

The angle measured between the Normal and where the ray is coming from.

Question 28

Wave

Answer 28

There are transverse waves and longitudinal waves.

Question 29

Medium

Answer 29

This can be a solid, a liquid or a gas.

Question 30

Peak/crest/trough

Answer 30

The top and bottom of a transverse wave.

Question 31

Speed of light

Answer 31

Travels at about 300,000,000 m/s.

Question 32

Longitudinal Wave

Answer 32

It represents all types of waves on an oscillation machine and represents light waves.