Effects of Heat Puzzles
Test your understanding of the effects of heat with these puzzles! Click the buttons to reveal hints and answers.
Puzzle 1: What happens to a solid when heat is applied to it?
Think about the particles and their motion.
When heat is applied, the particles of the solid vibrate more, and the solid may expand or melt if enough heat is added.
Puzzle 2: What is the process called when a liquid changes into a gas?
It occurs at the boiling point or below it.
The process is called evaporation (below boiling point) or boiling (at boiling point).
Puzzle 3: What happens to the length of a metal rod when heated?
Metals expand when heated.
The length of the metal rod increases due to thermal expansion.
Puzzle 4: What is the effect of heat on the volume of most substances?
Think about expansion.
Most substances expand in volume when heated, except water between 0°C and 4°C.
Puzzle 5: What happens when heat is applied to ice at 0°C?
It involves a change of state.
The ice melts into water without a temperature change until all the ice is melted.
Puzzle 6: What is the transfer of heat through a solid called?
It happens through particle collisions.
The transfer of heat through a solid is called conduction.
Puzzle 7: What is the effect of heat on gases?
It involves expansion and motion.
Gases expand when heated, and their particles move faster.
Puzzle 8: Why does a bimetallic strip bend when heated?
The two metals expand at different rates.
A bimetallic strip bends because the two metals have different coefficients of expansion.
Puzzle 9: What happens to water when it is cooled from 4°C to 0°C?
Water behaves unusually in this range.
Water expands when cooled from 4°C to 0°C, unlike most substances that contract.
Puzzle 10: What is the process called when a gas turns into a liquid?
It’s the reverse of evaporation.
The process is called condensation.
