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eraser
Reset score!
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×
magnet
Take 20 points!
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rocket
Go to first place!
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baam
Lose 25 points!
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5
×
TRUE or FALSE: A wave is an energy created by vibrations that propagate in all direction.
TRUE
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10
×
Radar, Wi-Fi router, cellphones and microwave use _______ for them to work.
microwaves
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10
×
What kind of waves are used in the medical field to kill cancer cells or tumors?
gamma
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15
×
How can an EM wave be produced?
EM waves are produced whenever charged particles like electrons are accelerated.
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10
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What property of EM wave refers to number of waves that pass a fixed point in a given amount of time?
Frequency
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5
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TRUE or FALSE: Mechanical waves like earthquake waves can travel even without a medium.
FALSE
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10
×
Which is the only EM wave that is detectable by the human eye?
visible light
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seesaw
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magnet
Take 5 points!
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shark
Other team loses 15 points!
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banana
Go to last place!
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10
×
EM wave often used in high speed cooking.
microwaves
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15
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Enumerate the 7 colors of the visible light spectrum according to increasing energy.
red, orange, yellow, green, blue, indigo, violet
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heart
Other team wins 10 points!
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seesaw
Swap points!
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gift
Win 25 points!
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lifesaver
Give 25 points!
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10
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Which type of EM wave is often used in radio and TV broadcasting?
radio waves
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10
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If the frequency of EM wave increases, what will happen to its wavelength?
decrease
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10
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What is the relationship between frequency and energy of EM waves?
directly proportional
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10
×
What do you call the part of a sinusoidal wave line which refers to the highest point of a wave?
Crest
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