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20
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What does RADAR mean?
radio detection and ranging
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15
×
Which EM wave is used in fiber optic communication, photography and illumination?
visible light
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15
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These are long, thin strands arranged in bundles and are used in communication.
fiber optics or optical fibers
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15
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Which EM wave is used in sterilizing water from drinking fountains?
ultraviolet
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15
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Which EM wave helps our body to produce a certain vitamin that is essential in our body's calcium absorption?
ultraviolet
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15
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Which layer of the atmosphere helps radio waves to bounce back and enable these radio communication signals to be heard over vast distances?
ionosphere
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monster
Reset all scores!
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fairy
Take points!
5
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25
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rocket
Go to first place!
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thief
Give points!
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25
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thief
Give points!
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25
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gift
Win 25 points!
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rocket
Go to first place!
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banana
Go to last place!
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15
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Which EM wave is used in checking signature on passbook?
ultraviolet
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15
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A mobile phone works by transmitting radio waves which are received by cell sites to a target mobile phone. True or False
False
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15
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What term refers to the use of light in medical treatment of a variety of ailments such as topical infections?
phototherapy
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15
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To which EM wave are you contact with while watching your favorite noon time show on TV?
radio
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baam
Lose 25 points!
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rocket
Go to first place!
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gift
Win 15 points!
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thief
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25
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heart
Other team wins 20 points!
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seesaw
Swap points!
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fairy
Take points!
5
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25
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thief
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25
15
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Which EM wave is used to heat or cook food?
microwave
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15
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In radio communication, what does FM stand for?
frequency modulation
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