Page 7 - E-Science Prim.6 2024-2025 U2_Handy
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? Thermal energy is the movement of particles of an object.
? Kinetic energy is the energy that molecules and atoms of a substance
has due to motion.
? Thermal energy of a substance relates to kinetic energy of its
molecules and atoms.
? Thermal energy = Total sum of kinetic energy of molecules & atoms.
? Heat is the transfer of thermal energy from higher body temperature to
lower body temperature.
? Temperature is a measure of the average kinetic energy of
molecules and atoms.
Ice melts
When a substance is heated:
Molecules Molecules Their speed Force holds Temperature
gain have more increases them
increases
thermal kinetic "move faster" decrease, and matter
energy energy and away from spaces
increase state
each other changes
(Expansion)
Temperature
When a substance is cooled:
decreases
Molecules Molecules Their speed Force holds and matter
release have less decreases them
thermal kinetic "move slower" state
energy energy and get close increase, changes
spaces
52 decrease
(Contraction)
First Term
