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physiacl science > sound and light Garrett Mauck > Flashcards

sound and light Garrett Mauck Flashcards

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0
Q

What is a pitch?

A

A pitch is a measure of how high or low something sound depends of the frequency.

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1
Q

What is a sound wave?

A

A longitudinal wave that is caused by vibrations and that travel through a medium.

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2
Q

What is infrasound?

A

It is a slow vibration of frequencies that is lower than 20 Hz.

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3
Q

What is ultrasound?

A

Any sound wave with frequencies higher than 20,000 Hz.

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4
Q

What is resonance?

A

When two object naturally vibrate at the same frequency that is phenomenon.

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5
Q

What is a intensity?

A

A rate that which energy flows through a area of space.

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6
Q

What is decibel?

A

It is something that measures a unit of sound or the power level of an electrical signal.

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7
Q

What is fundamental frequency?

A

The lowest frequency produce

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8
Q

Decibel is?

A

a unit used to measure the intensity of a sound or the power level of an electrical signal by comparing it with a given level on logarithmic scale.

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9
Q

What are harmonics?

A

harmonic is a signal or wave whose frequency is an integral multiple of the frequency of some reference signal or wave.

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10
Q

What are sonar?

A

It is a system that uses acoustic signals.

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11
Q

What are basilar membrane?

A

Contains a long, flexible membrane. Different parts of the basilar membrane vibrate a different natural frequencies.

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12
Q

What is a photon

A

a particle representing a quantum of light or other electromagnetic radiation. A photon carries energy proportional to the radiation frequency but has zero rest mass.

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13
Q

What is intensity

A

Intensity measures the strength of shaking produced by the earthquake at a certain location

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14
Q

What is radar

A

is an object-detection system that uses radio waves to determine the range, angle, or velocity of objects.

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15
Q

What is electromagnetic spectrum

A

the range of wavelengths or frequencies over which electromagnetic radiation extends.

16
Q

What is a light Ray

A

In optics a ray is an idealized model of light, obtained by choosing a line that is perpendicular to the wavefronts of the actual light, and that points in the direction of energy flow.

17
Q

What is virtual light

A

Convex lenses cause light rays to. converge, or come together.

18
Q

What is real image

A

occurs where rays converge, whereas a virtual image occurs where rays only appear to converge. Real images can be produced by concave mirrors and converging lenses

19
Q

What is diffuse deflection

A

Diffuse reflection is the reflection of light from a surface such that an incident ray is reflected at many angles rather than at just one angle as in the case of specular reflection.

20
Q

What are geometrical optics

A

Is an abstraction or instrument useful in approximating the paths along which light propagates in certain classes of circumstances.

21
Q

What is angel of reflection

A

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

22
Q

What is angel of incidence

A

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

23
Q

What is law of reflection

A

The angle of reflection is equal to the angle of incidence .

24
Q

What is normal

A

A line can be drawn perpendicular to the surface of the mirror.

25
Q

What is a convex mirror

A

When light hits it and on the other side it will spread out

26
Q

What is a concave mirror

A

with a curved reflecting surface

27
Q

What is total internal reflection

A

Is the complete reflection that takes place within a substance when the angles of incidence of light striking the surface boundary is less than the critical angle

28
Q

What is lens

A

is thicker in the center than the ends is a convex lens. Any lens thicker at the ends than in the center is a concave lens.

29
Q

What is magnification

A

is the increase (or decrease) in size of an image produced by an optical system compared to the true size.

30
Q

What is prism

A

In the Light and Color unit of The Physics Classroom Tutorial, the visible light spectrum was introduced and discussed

31
Q

What is dispersion

A

Where light could be spread out

32
Q

What is mirage

A

It is where the molecules in the ground heat up and it makes the road to look like there is water on the road

33
Q

What is converging lens

A

Is where light bend inward

34
Q

Focal point

A

It where in space parallel light space meet after passing through the lens

physiacl science (9 decks)

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