Share Radiation and rest of heat (lesson 3)
Save to Folder
When the sun warms your skin or you sit near a fire, what kind of energy do you feel?
Radiation
_____________ is energy that is sent out in waves.
Radiation
When radiation waves hit your skin, it is converted into __________________
Thermal energy
True or False: Radiation cannot travel through matter and empty space.
False! Radiation can travel through MATTER and SPACE
Radiation can travel through _________ and ___________
Matter and Space
Radiation can travel through _________ and ____________
Matter and empty space
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
True or False: Heat can be used in many different ways
True
What are examples of fossil fuels?
Coal, natural gas, oil
Fossil fuels are a source of __________
Heat
True or False: The sun's energy can be changed into heat
True
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
___________ occurs when 2 surfaces rub together
Friction
As a result of friction, ________ is produced
Heat
__________ is the transfer of thermal energy as matter moves
Convection
_____________ is the transfer of heat that occurs when one thing touches another
Conduction
