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Unit 1 >
Science
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Class 6
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Samacheer Kalvi - English Medium
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22 cards in this set.
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When an object is heated, the molecules that make up the object
a. begin to move faster
The unit of heat is
b. joule
One litre of water at 30°C is mixed with one litre of water at 50°C. The temperature of the mixture will be
d. around 40°C
An iron ball at 50°C is dropped in a mug containing water at 50°C. The heat will
b. not flow from iron ball to water or from water to iron ball.
Heat flows from a ____________ body to a ____________ body.
higher temperature, lower temperature
The hotness of the object is determined by its _______________
temperature
The SI unit of temperature is ________
kelvin
Solids________________ on heating and______________ on cooling.
expand, contract
Two bodies are said to be in the state of thermal______________ if there is no transfer of heat taking place
equilibrium
Heat is a kind of energy that flows from a hot body to a cold body.
True
Steam is formed when heat is released from water.
False
Thermal expansion is always a nuisance.
FALSE
Borosilicate glass do not expand much on being heated.
True
The unit of heat and temperature are the same.
False
Heat
joule
Temperature
kelvin
Thermal Equilibrium
No heat flow
Ice cube
0°C
Boiling water
100°c
Heat : Joule :: Temperature : _____________
Kelvin
ice cube : 0°C :: Boiling water :_____________
100°C
Total Kinetic Energy of molecules: Heat :: Average Kinetic Energy : __________
Temperature
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