Sound Science
This unit measures the loudness (relative intensity) of sound.
A decibel
Frequency is measured in this unit.
Hertz
This material reflects the most visible light.
Mirror
Infrared radiation is visible or invisible to humans?
Invisible
Light travels faster than this type of wave.
Sound
A wave with greater amplitude has more of this.
Energy
Frequency is the number of wave cycles per _____.
This material transmits the most visible light.
Clear glass
Light travels with or without a medium?
Without a medium
Which film would reduce cataract risk: one that transmits 10% UV or 60% UV?
10%
Sound must travel through this.
A medium
A wave completes 4 cycles in 2 seconds. Its frequency is _____.
2 Hz
This material absorbs the most visible light.
Black cloth
Light is this type of wave. (Moves up and down)
Transverse
A transmission graph shows Film A allows 8% of ultraviolet light to pass through, while Film B allows 55%.
Which film provides better protection for your eyes, and why?
Film A because it transmits less ultraviolet light which can damage the eyes.
Sound travels faster in steel than in air because steel is more _____.
A wave completes 6 cycles in 1 second. Which wave has higher frequency: 6 cycles in 1 sec or 4 cycles in 2 sec?
6 cycles per second
Which material reduces visible light transmission to protect your eyes?
Sunglasses
This type of radiation can damage skin and increase cataract risk.
Ultraviolet
Refraction is when light is _____ as it passes through a new material at an angle.
Bent
A sound increases from 60 dB to 70 dB. It becomes this many times more intense.
10 times
If amplitude doubles, the sound becomes this.
White light contains all of these.
Visible colors
These three types of energy from the Sun mostly reach Earth’s surface.
Infrared, visible, and ultraviolet
The angle of incidence equals the angle of _____.
Reflection