light waves, radio waves, wifi are all forms of ________________ radiation
electromagnetic
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15
cool water in a pot on the stove rises up as it is heated and starts to form _____________ currents in the water
convestion
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15
Heat energy travells from a _________ temperature object to a _________ temperature object
high to low
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heart
Other team wins 20 points!
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gold
Win 50 points!
Okay!
fairy
Take points!
5
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25
baam
Lose 20 points!
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15
standing 10 meters from a bonfire you feel the heat. has the heat travelled to you by radiation in a straight line or by blowing convection air currents?
radiation in a straight line
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15
Hertz is the number of cycles per second of a wave - what is the unit used to measure amplitude or loudness?
Decibels
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15
What are the three forms of heat thransfer?
radiation, convesction & conduction
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15
What term is used to describe how often a wave repeats in a given time?
frequency
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thief
Give points!
5
10
15
20
25
gift
Win 20 points!
Okay!
rocket
Go to first place!
Okay!
baam
Lose 25 points!
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15
Energy isnt created or destroyed, just changed. Explain how this works as a bungy jumper leaps off the bridge
Gravitational potential is converted to kinetic and then to elastic potential as they get to the bottom.
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15
200 joules of light energy are measured coming from a light globe consuming 1000 Joules of energy. How efficient is the globe?
200/1000 = 20%
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15
A footballer's leg kicks a stationary football. An energy transformation or ernegy transfer?
Transfer
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15
You want to build a soundproof room in your basement (for music) suggest two good material to line the walls
foam, egg containers, soft blankets, padding
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15
Sound and light waves can both travel through the vaccuum of space T or F