Heat and Internal Energy
Physics ⇒ Heat and Thermodynamics
Heat and Internal Energy starts at 7 and continues till grade 12.
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A gas is compressed adiabatically. What happens to its internal energy?
A metal rod is heated at one end. Which method of heat transfer is primarily responsible for the increase in temperature at the other end?
Define latent heat.
Describe the microscopic interpretation of temperature in terms of molecular motion.
Describe the process of conduction in terms of molecular motion.
Explain the difference between heat and internal energy.
Explain why the temperature of a substance does not change during a phase change, even though heat is being added.
State the First Law of Thermodynamics in words.
Which law states that the change in internal energy of a system is equal to the heat added to the system minus the work done by the system? (1) Zeroth Law of Thermodynamics (2) First Law of Thermodynamics (3) Second Law of Thermodynamics (4) Third Law of Thermodynamics
Which of the following best defines internal energy? (1) The energy due to the motion and position of an object as a whole (2) The total kinetic and potential energy of the molecules within a substance (3) The energy required to raise the temperature of 1 kg of a substance by 1 K (4) The energy transferred due to temperature difference
Which of the following is an example of heat transfer by radiation? (1) Heating of a metal rod in a flame (2) Warming of the Earth by the Sun (3) Boiling water in a pot (4) Melting of ice in hand
Which of the following is NOT a method of heat transfer? (1) Conduction (2) Convection (3) Radiation (4) Reflection
Fill in the blank: The energy transferred due to a temperature difference between two bodies is called ________.
Fill in the blank: The transfer of heat by the movement of a fluid (liquid or gas) is called ________.
The SI unit of heat is ________.
The specific heat capacity of a substance is defined as the amount of heat required to raise the temperature of ________ of the substance by 1 K.
True or False: Heat is a form of energy that is stored within a body.
True or False: In an isothermal process, the internal energy of an ideal gas remains constant.
True or False: Internal energy depends only on the state of the system and not on how the system reached that state.
True or False: The amount of heat required to change the temperature of a substance depends on its mass, specific heat capacity, and temperature change.
