Heat and Internal Energy
Physics ⇒ Heat and Thermodynamics
Heat and Internal Energy starts at 7 and continues till grade 12.
QuestionsToday has an evolving set of questions to continuously challenge students so that their knowledge grows in Heat and Internal Energy.
How you perform is determined by your score and the time you take.
When you play a quiz, your answers are evaluated in concept instead of actual words and definitions used.
See sample questions for grade 11
A 100 g sample of water at 20°C is heated to 80°C. The specific heat capacity of water is 4,186 J/kg·K. Calculate the heat absorbed by the water.
A 2 kg block of copper is heated from 20°C to 50°C. The specific heat capacity of copper is 390 J/kg·K. Calculate the amount of heat required.
A gas is compressed by a piston. During the process, 150 J of work is done on the gas and 100 J of heat is released by the gas to the surroundings. What is the change in internal energy of the gas?
A system absorbs 400 J of heat and its internal energy increases by 250 J. How much work is done by the system?
A system does 75 J of work on the surroundings and its internal energy decreases by 50 J. How much heat was transferred to or from the system?
Describe the difference between isothermal and adiabatic processes.
Describe what happens to the internal energy of an ideal gas during an isothermal expansion.
Explain why the temperature of a substance does not change during a phase change, even though heat is being added.
Explain why work done by a gas during expansion at constant pressure is given by W = PΔV.
If 500 J of heat is supplied to a system and the system does 200 J of work, what is the change in internal energy?
State the difference between heat and internal energy.
