Thermal Physics
Each subtopic includes About section, revision page link, 10 preview questions, and practice CTAs.
Kinetic particle model of matter
SubtopicKinetic particle model of matter under Thermal Physics for Grade 11 IGCSE.
Preview questions (no answers)
- 1.
Which process describes a liquid changing into a gas at a temperature below its boiling point?
A.Evaporation
B.Condensation
C.Sublimation
D.Melting
- 2.
In the context of Brownian motion, why do smoke particles suspended in air move in a random, zigzag fashion?
A.Because of the effects of convection currents in the air
B.Because of the constant gravitational pull on the particles
C.Because they are hit by fast-moving, invisible air molecules
D.Because the smoke particles repel each other due to static charge
- 3.
What happens to the average kinetic energy of the molecules in a gas when its temperature is increased?
A.It remains constant
B.It increases
C.It decreases
D.It first increases then decreases
Download the worksheet for Thermal Physics - Kinetic particle model of matter to practice offline. It includes additional chapter-level practice questions.
Thermal expansion of solids, liquids and gases
SubtopicThermal expansion of solids, liquids and gases under Thermal Physics for Grade 11 IGCSE.
Preview questions (no answers)
- 1.
When a substance is heated and undergoes thermal expansion, what happens to its density?
A.The density increases because the mass increases
B.The density decreases because the volume increases
C.The density stays the same because mass and volume increase proportionally
D.The density decreases because the mass decreases
- 2.
A bimetallic strip consists of two different metals, Brass and Iron, bonded together. When heated, the strip bends as shown in the diagram. What is the reason for this behavior?
A.Brass expands more than Iron for the same temperature rise
B.Iron expands more than Brass for the same temperature rise
C.Iron contracts while Brass expands
D.Brass melts at a lower temperature than Iron
- 3.
Engineers leave small gaps between the sections of a concrete bridge. What is the primary purpose of these gaps?
A.To allow the concrete to contract in the summer
B.To allow the concrete to expand in the summer without buckling
C.To reduce the weight of the bridge structure
D.To allow water to drain through the bridge more easily
Download the worksheet for Thermal Physics - Thermal expansion of solids, liquids and gases to practice offline. It includes additional chapter-level practice questions.
Specific heat capacity
SubtopicSpecific heat capacity under Thermal Physics for Grade 11 IGCSE.
Preview questions (no answers)
- 1.
Two blocks, one made of Copper () and one made of Aluminium (), have the same mass. If both blocks absorb the same amount of thermal energy, which statement is correct?
A.The Aluminium block will have a higher temperature rise.
B.The Copper block will have a higher temperature rise.
C.Both blocks will experience the same temperature rise.
D.The Aluminium block will lose more mass.
- 2.
How much thermal energy is required to raise the temperature of of water from to ? (Specific heat capacity of water = )
A.B.C.D. - 3.
What is the standard SI unit for specific heat capacity?
A.B.C.D.
Download the worksheet for Thermal Physics - Specific heat capacity to practice offline. It includes additional chapter-level practice questions.
Melting, boiling and evaporation
SubtopicMelting, boiling and evaporation under Thermal Physics for Grade 11 IGCSE.
Preview questions (no answers)
- 1.
Which statement correctly describes the difference between boiling and evaporation?
A.Boiling only occurs at a specific temperature, while evaporation occurs at any temperature.
B.Evaporation involves the whole volume of the liquid, while boiling only occurs at the surface.
C.Boiling causes the temperature of the remaining liquid to drop, while evaporation does not.
D.Evaporation requires an external heat source, whereas boiling happens spontaneously.
- 2.
Identify the process occurring at point B in the following state-change sequence for a substance being heated at a constant rate.
A.Sublimation
B.Melting
C.Condensation
D.Boiling
- 3.
Which of the following conditions would most significantly increase the rate of evaporation of water from a puddle?
A.Increasing the humidity of the surrounding air.
B.Decreasing the surface area of the puddle.
C.Decreasing the temperature of the water.
D.Increasing the speed of the air moving over the surface.
Download the worksheet for Thermal Physics - Melting, boiling and evaporation to practice offline. It includes additional chapter-level practice questions.
Transfer of thermal energy (Conduction, convection and radiation)
SubtopicTransfer of thermal energy (Conduction, convection and radiation) under Thermal Physics for Grade 11 IGCSE.
Preview questions (no answers)
- 1.
In the diagram provided, a beaker of water is heated from the bottom. What happens to the water at point A?
A.It becomes denser and sinks.
B.It becomes less dense and rises.
C.It stays at the bottom and conducts heat to the top.
D.It evaporates immediately.
- 2.
Which surface would be the most effective at absorbing infrared radiation from the Sun?
A.A shiny silver surface
B.A dull black surface
C.A shiny white surface
D.A dull white surface
- 3.
A student places four different metal rods of the same dimensions in a beaker of boiling water. Each rod is coated with wax at the top. The wax on the copper rod melts first. What does this indicate about copper?
A.It is the best thermal insulator.
B.It has the highest density.
C.It is the best thermal conductor.
D.It absorbs infrared radiation the fastest.
Download the worksheet for Thermal Physics - Transfer of thermal energy (Conduction, convection and radiation) to practice offline. It includes additional chapter-level practice questions.