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Radiation and rest of heat (lesson 3)
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_____________ is the transfer of heat that occurs when one thing touches another
Conduction
__________ is the transfer of thermal energy as matter moves
Convection
As a result of friction, ________ is produced
Heat
___________ occurs when 2 surfaces rub together
Friction
Give two examples of how the sun's energy can be changed into heat
A black tshirt absorbing energy and becoming a form of heat A solar panel absorbing energy and becoming a form of heat
True or False: The sun's energy can be changed into heat
True
Fossil fuels are a source of __________
Heat
What are examples of fossil fuels?
Coal, natural gas, oil
True or False: Heat can be used in many different ways
True
Explain the greenhouse effect
Radiation from sun warms ground; Ground warms air; Air moves up (convect); Glass keeps air from escaping; Cool air moves down (convect); Convec current all year
Radiation can travel through _________ and ____________
Matter and empty space
Radiation can travel through _________ and ___________
Matter and Space
True or False: Radiation cannot travel through matter and empty space.
False! Radiation can travel through MATTER and SPACE
When radiation waves hit your skin, it is converted into __________________
Thermal energy
_____________ is energy that is sent out in waves.
Radiation
When the sun warms your skin or you sit near a fire, what kind of energy do you feel?
Radiation
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