sound and light

Question 0

What is ultrasound?

Answer 0

A sound wave that has higher frequencies than 20 000 Hz

Question 1

What is a sound wave?

Answer 1

Made my vibrations that goes through a medium and is a longitudinal wave.

Question 2

What is resonance?

Answer 2

When two object vibrate at the same frequency and is a phenomenon.

Question 3

What is Intensity?

Answer 3

In a area the flow of the energy in which it’s rate.

Question 4

What is Decibel?

Answer 4

A unit related to intensity

Question 5

What is Fundamental frequency?

Answer 5

The frequency of the vibrations.

Question 6

What is Harmonics?

Answer 6

Certain whole number multiplies of its fundamental frequency.

Question 7

What is pitch?

Answer 7

Measure of how low or high a sound is perceived by depending on the frequency of the sound wave.

Question 8

What is sonar?

Answer 8

It stands for sound navigation and ranging, a system that uses signals and echoes return to determine where the object is.

Question 9

What is Basilar Membrane?

Answer 9

A long and flexible membrane that is in the Cochlea.

Question 10

What is Photon?

Answer 10

A unit or quantum of light.

Question 11

What is intensity?

Answer 11

The rate the energy flows through a given Space or area.

Question 12

What is Radar?

Answer 12

Stands for radio detection and ranging, it’s a system that uses reflective radio waves that determines the velocity and location of objects.

Question 13

What is Electromagnetic Spectrum?

Answer 13

Light that fills the air and space around us and consists of light at all possible energies, frequencies, and wavelengths.

Question 14

What is light Ray?

Answer 14

A line in space that matches the direction of the flow of radiant energy.

Question 15

What is virtual image?

Answer 15

An image that forms at a location from witch light rays don’t actually come, but they appear to.

Question 16

What is a real image?

Answer 16

An image formed by light rays that come together at a specific location.

Question 17

What is diffuse reflection?

Answer 17

A reflection of light into random directions.

Question 18

What is geometrical optics?

Answer 18

The study of light in cases in which light behaves like a ray.

Question 19

What is the angle of reflection?

Answer 19

The angle made by a reflected ray with a perpendicular to the reflecting surface.

Question 20

What is the angle of incidence?

Answer 20

The angle that an incident line or ray makes with a perpendicular to the surface at the point of incidence.

Question 21

What is the law of reflection?

Answer 21

The law of reflection states that the incident ray, the reflected ray, and the normal to the surface of the mirror all lie in the same plane.

Question 22

What is normal?

Answer 22

The angle of reflection - In waves, the angle formed by the reflected wave.

Question 23

What is a convex mirror?

Answer 23

Where the mirror is bent outward.

Question 24

What is a concave mirror?

Answer 24

Where the mirror is bent inward.

Question 25

What is total internal reflection?

Answer 25

Whenever full amount of reflection on a object.

Question 26

What is lens?

Answer 26

The transparent object that reflects light waves so that they converge diverge to create an image.

Question 27

What is magnification?

Answer 27

A change in the size of an image compared to the dice of the object.

Question 28

What is prism?

Answer 28

A system that consists of two or more plane surfaces of a transparent solid at an angle with each other.

Question 29

What is dispersion?

Answer 29

The separation of visible light into its different colors.

Question 30

What is mirage?

Answer 30

An image that is displaced above, below, or to one side of its true position.

Question 31

What is converging lens?

Answer 31

A lens that curves both ways outward and inward where light coming out of it meets at the focal point.

Question 32

What is focal point?

Answer 32

The point on the axis of a mirror or lens at which all incident parole light rays converge or diverge.