what are some ways you try to stay warm in the winter? warm up /science/energy-light-sound/heat.htm
DESCRIPTION
RadiationTRANSCRIPT
What are some ways you try to stay warm
in the winter?
Warm Up
http://studyjams.scholastic.com/studyjams/jams/science/energy-light-sound/heat.htm
Radiation
• Radiation is heat transfer through empty space.
• It travels in the form of light waves.
• Sunlight is a form of heat radiation.
(1)
Radiation
Convection
• Movement of heat in liquids and gases.
• Warm air rises and cool air sinks.
• This flow of heat produces a convection current.
(2)
Convection
Conduction
• Conduction is heat transfer by direct physical contact.
• Conduction can happen in solids, liquids and gases.
• Ex: An ice cube will melt in your hand
(3)
Conduction
Bread is touchingThe pan and burning.
http://www.teachertube.com/viewVideo.php?video_id=159713
Let’s PRACTICE