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As light passes through a raindrop or pice of broken glass it splits - called color dispersion. What color light bends the most? Blue or Red?
Blue
Does red or blue light have a higher frequency?
Blue ROYGBIV
Hertz is the number of cycles per second of a wave - what is the unit used to measure amplitude or loudness?
Decibels
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.
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%
Sam takes handwarmers to the snow to put in his gloves. They contain metal that reacts with air when exposed. This is an energy transfer of _____ energy to _______ energy
cool water in a pot on the stove rises up as it is heated and starts to form _____________ currents in the water
convestion
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
What term is used to describe how often a wave repeats in a given time?
frequency
light waves, radio waves, wifi are all forms of ________________ radiation
electromagnetic
What are the three forms of heat thransfer?
radiation, convesction & conduction
Heat energy travells from a _________ temperature object to a _________ temperature object
high to low
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
Sound and light waves can both travel through the vaccuum of space T or F
False - only light can travel throug a vacuum/
What does sound energy travel through to get to your friend's ears?
air usually
A footballer's leg kicks a stationary football. An energy transformation or ernegy transfer?
Transfer
Energy efficiency can be described as the ratio of useful energy divided by _____________ energy
Total


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