Light, sound science Flashcards

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1
Q

Which two parts of the eye refract light onto the retina?

A

Lens and cornea

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2
Q

The number of wave crests that pass a given point in one second is called the:

A

frequency measured in hertz

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3
Q

White light consists of:

A

all the colours of the rainbow

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4
Q

The amplitude of a sound wave is an indication of:

A

how loud or quiet the volume of sound is

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5
Q

Which part of the eye cannot change its size and shape?

A

cornea

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6
Q

A convex mirror can also be described as:

A

A diverging mirror

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7
Q

According to the law of refraction, light passing from air to glass will cause the light to

A

bend towards the normal

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8
Q

Which of the following types of waves has the shortest wavelength?

A

gamma rays

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9
Q

What is the electromagnetic spectrum?

A

A continuous range of wavelengths of energy.

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10
Q

the use of Radio waves

A

Radio, broadcast television signals, speed cameras, speed guns

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11
Q

Microwaves

A

Heating and cooking food, TV signals (over a large distance)

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12
Q

Infrared

A

Remote controls, heat transmission, night-vision
cameras

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13
Q

Ultraviolet

A

Tanning beds, kill bacteria, fluorescent materials, detecting
counterfeit money

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14
Q

Gamma rays

A

Treat cancer, sterilise medical equipment and/or food

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