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Heat Transfer
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Heat Transfer
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Heat Transfer
The photographs taken by the device “Thermograph” are known as
thermal photos
heat graphical pictures
thermograms
all of above
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Heat Transfer
Greenhouse gases effect on earth’s atmosphere is increased by
CFCs (chlorofluorocarbons)
air conditioners
perfumes
burning fossil fuels
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Heat Transfer
Earth is warm by heat energy coming from
sun
moon
universe
space
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Heat Transfer
All heat ‘insulators’ are
metalloids
transition metals
non metals
metals
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Heat Transfer
When heating element from cooker is turned out, at first it emits
heat energy
gamma rays
infrared waves
radio waves
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Heat Transfer
At night, land turns to be
warm than sea
cool than sea
very hot
extremely hot
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Heat Transfer
The number of walls of a thermos is
1
2
3
4
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Heat Transfer
In medicine thermograph is used to
identify bacteria
identify infected tissues
kill infected cells
identify damaged parts of an organ
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Heat Transfer
‘Metals’ are the best
insulators of heat
conductors of heat
conductors of light
insulators of electricity
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Heat Transfer
To prevent loss of heat through walls, the walls must be
insulated
conducted
painted black
painted dull
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