Kaylin. Sound and Light

Question 0

What is pitch?

Answer 0

How high or low a sound is perceived

Question 1

What is a sound wave?

Answer 1

A wave caused by vibrations and travels through a medium.

Question 2

What is infrasound?

Answer 2

Slow vibrations with frequencies less than 20 Hz.

Question 3

What is ultrasound?

Answer 3

Sound wave with a frequency higher than 20 000 Hz.

Question 4

What is resonance?

Answer 4

Occurs when 2 objects naturally vibrate with the same frequency.

Question 5

What is intensity?

Answer 5

The rate that energy flows through space

Question 6

What is a decibel?

Answer 6

Unit used to measure the loudness.

Question 7

What is fundamental frequency?

Answer 7

The frequency of a standing wave.

Question 8

What is harmonics?

Answer 8

Fundamental frequency and at a certain whole number multiplies of that frequency.

Question 9

What is sonar?

Answer 9

A system that uses signals and echoes to see the location of something or communication.

Question 10

What is the basilar membrane?

Answer 10

A flexible membrane in the cochlea that vibrates at different natural frequencies.

Question 11

What is a photon?

Answer 11

The unit or quantum of light

Question 12

What is intensity?

Answer 12

The rate energy flows through an object

Question 13

What is radar?

Answer 13

A system that determines velocity and location of objects by using reflective radio waves.

Question 14

What is the electromagnetic spectrum?

Answer 14

A spectrum that has light of all possible energies, frequencies and wavelengths.

Question 15

What is a light Ray?

Answer 15

A line that goes the same direction of the radiant energy in space

Question 16

What is a virtual image?

Answer 16

Image that forms at the location from light rays that appear to be there but aren’t actually there.

Question 17

What is a real image?

Answer 17

An image that forms when light rays actually form at a specific location.

Question 18

What is diffuse reflection?

Answer 18

The reflection of light in random directions

Question 19

What is geometrical optics?

Answer 19

The study of light when it acts as a ray

Question 20

What is angle of reflection?

Answer 20

The angle that light rays reflect off the surface.

Question 21

What is angle of incidence?

Answer 21

The angle light rays strike the surface.

Question 22

What is law of reflection?

Answer 22

When the angle of reflection and angle of incidence are the same.

Question 23

What is the normal?

Answer 23

The point where light hits the surface.

Question 24

What is a convex mirror?

Answer 24

A mirror that curves inward

Question 25

What is a concave mirror?

Answer 25

A mirror that curves outward.

Question 26

What is Total Internal Reflection?

Answer 26

Total reflection when the angle of incidence of light hit a boundary less than a critical angle.

Question 27

What is a lens?

Answer 27

A transparent object that refracts light to form an object

Question 28

What is magnification?

Answer 28

Changing the size of an object.

Question 29

What is a prism?

Answer 29

2 or more transparent planes that are at an angle.

Question 30

What is dispersion?

Answer 30

The separation of different frequencies in a wave that makes individual component waves

Question 31

What is a mirage?

Answer 31

When light refracts in the atmosphere making a virtual image.

Question 32

What is a converging lens?

Answer 32

Lens that bends light in.

Question 33

What is a focal point?

Answer 33

The main focus when light rays come together.