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Physical Science > Zachary English > Flashcards

Zachary English Flashcards

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0
Q

What is Pitch?

A

How high or low a sound is heard.

Depends of the frequency

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1
Q

What is a Sound Wave

A

Longitudinal Wave
Caused by vibrations
Travels through a median

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2
Q

What is Infrasound

A

Low frequency sound that can’t be heard by humans

Below 20 hertz

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3
Q

What is Ultrasound?

A

Frequency higher then 20,000 hertz

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4
Q

What is Resonance?

A

When two objects vibrate at the same frequency

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5
Q

What is Intensity?

A

How fast the energy flows through a given area.

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6
Q

What is a Decibel?

A

Unit used to measure intensity of a sound

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7
Q

What is Fundimental Frequency

A

Lowest frequency produced

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8
Q

What are Harmonics?

A

Whole number multiples of the fundimental frequency

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9
Q

What is Sonar?

A

(Sound navigation and ranging)

Uses sound waves that bounce off objects and returns back to source. Can be used to determine distance of objects.

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10
Q

What is the Basilar Membrane?

A

Long flexible membrane in the cochlea. Different parts of it vibrate at different natural frequencies.

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11
Q

What is a Photon?

A

A unit of light

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12
Q

Intensity?

A

Rate energy flows through a given space

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13
Q

What is Radar?

A

(Radio detection and ranging) uses reflected radio waves to determine location and velocity of objects.

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14
Q

What is the Electromagnetic Spectrum?

A

The range of wavelengths over which electromagnetic radiation extends

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15
Q

What is a light Ray?

A

Describes reflection and refraction.

16
Q

Virtual image?

A

Virtual image appears far behind a mirror when you are in front

17
Q

Real image?

A

Image formed by light waves that come together at a specific location.

18
Q

Diffuse Reflection?

A

Reflection of light in random directions

19
Q

Geometrical optics?

A

The study of light When light behaves like a wave

20
Q

Angle of reflections?

A

The angle of light rays reflecting off a surface

21
Q

Angle of incidence?

A

Same angle as rays striking the surface

22
Q

Law of reflection?

A

Th fact of the angle of incidence is the same is the same as the angle of reflection

23
Q

Normal?

A

Perpendicular line at the surface of the point where light hits the mirror

24
Q

Convex mirror?

A

Mirror that bulges out

25
Q

Concave mirror?

A

Mirror that caves in

26
Q

Total internal reflection?

A

When light meets at the boundary of two mediums

27
Q

What is a lens?

A

Transparent object that refracts lights.

28
Q

Magnification?

A

Bending of light that makes an object change in size

29
Q

What is a prism?

A

Transparent figure that has two or more planes that is at an angle with each other

30
Q

What is Dispersion?

A

Separation of waves with different frequencies.

31
Q

What’s a Mirage?

A

Image reflected by light in Atmoshpere

32
Q

Converging lens?

A

Transparent object that bends light inward

33
Q

Focal point?

A

Small area where light rays come together and focus together

Physical Science (9 decks)

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