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i have learned that heat is____________.
Heat usually travels from___________ body to__________body.
The three modes of heat transfer are _____________,___________,and___________.
i have learned that heat is____________.
Heat usually travels from___________ body to__________body.
The three modes of heat transfer are _____________,___________,and___________.
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Answer:
(a) heat is a form of energy.
(b) temperature determines the degree of hotness or coldness of a body.
(c) on heating a body, its temperature rises.
(d) we use a thermometer for measuring the temperature of a body.
(e) the S.I unit of temperature is kelvin.
(f) in a thermometer, the commonly used liquid is mercury.
(g) the temperature of a normal human body is 37° C.
(h) a person is said to have fever if his body temperature is more than 98.6
(i) a hot metallic piece is placed in tap water contained in a bucket. Heat will flow from metallic piece to water.
(j) the temperature of boiling water is 100°C.
(k) liquids expand more than the solids.
(l) gases expand more than the liquids.
(m) heat transfer in solids is by conduction.
(n) heat transfer in liquids and gases is by convection.
(o) metals are conductors of heat.
(p) still air is an insulator of heat.
(q) black and dull surfaces are good absorbers of heat.