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block

Pitch is defined as:

Select the correct answer(s).  

(0/0)

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The highness or lowness of a sound

Breaking the sound barrier

The amount of energy in each wave

The human perception of sound

none

We see objects as "black" because:

Select the correct answer(s).  

(0/0)

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All wavelengths of visible light are reflected in equal proportions

All wavelengths of visible light are absorbed in equal proportions

All wavelengths of visible light are absorbed except black

none

A beam of light is shined on two different objects in the same area. It reflects off object one and is absorbed by object two. Which statement describes why the light behaved differently on each of the two objects?

Select the correct answer(s).  

(0/0)

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the light traveled a different distance before hitting each object

Each of the objects was a different shape

the light was traveling at different speeds before it hit each object

Each of the objects was made of different material

none

What is the relationship between pitch and frequency?

Select the correct answer(s).  

(0/0)

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The higher the frequency, the lower the pitch

The higher the frequency, the higher the pitch

There is no relationship

none

What is the unit of measurement we use to measure intensity?

Select the correct answer(s).  

(0/0)

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Photons

Decibels

Hertz

none

Loudness is defined as:

Select the correct answer(s).  

(0/0)

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Breaking the sound barrier

The amount of energy in each wave

The highness or lowness of a sound

The human perception of sound intensity

none

How would you describe an electromagnetic wave?

Select the correct answer(s).  

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Transverse wave with two parts, where one part is electrical and the other part is magnetic

Combination of traverse and compressional waves, where one part is magnetically charged and the other part is mechanical

Compressional wave with two parts, where one part is electrical and the other part is mechanical

none

Does light travel the same speed in a medium as it does in a vacuum?

Select the correct answer(s).  

(0/0)

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yes

no

none

Are electromagnetic waves parallel or perpendicular to each other?

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(0/0)

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Perpendicular

Parallel

none

What is the relationship between frequency and photon energy?

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(0/0)

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The lower the frequency, the higher the photon energy

The higher the frequency, the higher the photon energy

The higher the frequency, the higher the amplitude

none

What is the relationship between intensity and amplitude?

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(0/0)

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There is no relationship between intensity and amplitude

As intensity increases, so does amplitude

As intensity increases, amplitude decreases

none

Intensity is defined as:

Select the correct answer(s).  

(0/0)

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The amount of energy in each wave

The human perception of sound

The highness or lowness of a sound

Breaking the sound barrier

none

What we are able to see depends on two factors. They are:

Select the correct answer(s).  

(0/0)

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The amount of light and color of the object

The temperature and pigments of the object

The kind of material and color of the object

none

We see objects as "white" because:

Select the correct answer(s).  

(0/0)

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All wavelengths of visible light are reflected in equal proportions

All wavelengths of visible light are absorbed except white

All wavelengths of visible light are absorbed in equal proportions

none

Light is composed of tiny particles called:

Select the correct answer(s).  

(0/0)

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Electrons

Photons

Protons

Neutrons