This checkpoint tests the thermal block of the Energy unit: energy transfer and work, heat vs temperature, conduction, convection, radiation, specific heat capacity, and thermal expansion.
This checkpoint is cumulative. Strong performance means you can explain and justify ideas across the whole block rather than answer each lesson in isolation.
Energy transfer and work, power, and how energy moves between objects.
Heat vs temperature, thermal energy, and the role of insulation.
Conduction, convection and radiation in detail with particle-level explanations.
Specific heat capacity, water's high SHC, and comparing materials.
Thermal expansion and contraction, particle theory, and engineering applications.
1. What is the difference between heat and temperature?
2. Which heat transfer method involves the movement of particles within a fluid?
3. How does conduction transfer heat through a solid metal rod?
4. Why does water have a high specific heat capacity?
5. A beaker of water and a beaker of sand receive the same amount of heat energy. Which heats up faster?
6. Why are expansion joints needed in bridges?
7. Which material would be the best thermal insulator?
8. Radiation transfers heat by:
9. On a hot day, why does the sand at the beach feel hotter than the water?
10. Which statement best summarises this block?
Describe the three methods of heat transfer (conduction, convection, radiation) and give one example of each.
Define each method clearly and give a real-world example.
Explain why water is used as a coolant in car engines, using the concept of specific heat capacity.
Link water's high SHC to its ability to absorb heat without a large temperature rise.
A student says, "Thermal expansion happens because the particles themselves get bigger when heated." Explain why this is wrong and describe what actually happens at the particle level.
Explain particle behaviour during heating and why the overall material expands.
1: C. Temperature measures average kinetic energy of particles; heat is the transfer of thermal energy between objects.
2: B. Convection involves warmer, less dense fluid rising and cooler, denser fluid sinking.
3: C. Particles vibrate more when heated and pass kinetic energy to adjacent particles.
4: B. Water needs a large amount of energy to raise its temperature by 1 degree Celsius compared to many other substances.
5: B. Sand has a lower specific heat capacity, so its temperature rises more quickly for the same energy input.
6: B. Expansion joints accommodate thermal expansion and contraction, preventing structural damage.
7: C. Fibreglass traps air and reduces conduction and convection, making it a good insulator.
8: C. Radiation transfers energy via infrared electromagnetic waves and can travel through a vacuum.
9: B. Sand has a lower specific heat capacity, so for the same heat input its temperature rises more than water.
10: C. This block covers the three methods of heat transfer and how material properties like SHC affect thermal behaviour.
Model answer:
Model answer:
Model answer:
You should now distinguish conduction, convection and radiation and explain each at the particle level.
You should explain specific heat capacity and use it to compare material behaviour.
You should explain thermal expansion using particle theory and give engineering examples.
The next block explores renewable and non-renewable energy sources and electricity generation.