#1
Which of the following is a form of energy associated with the motion of particles?
Thermal energy
ExplanationEnergy related to particle motion.
#2
What is the SI unit of heat?
Joule
ExplanationStandard unit of heat.
#3
What is the relationship between temperature and the average kinetic energy of particles in a substance?
Directly proportional
ExplanationTemperature and kinetic energy relationship.
#4
Which of the following is a unit of heat?
Joule
ExplanationStandard unit of heat measurement.
#5
What is the term for the transfer of heat through the movement of fluids?
Convection
ExplanationHeat transfer by fluid motion.
#6
Which law of thermodynamics states that heat always flows from higher to lower temperature objects?
Second Law
ExplanationHeat flow direction law.
#7
Which law of thermodynamics states that energy cannot be created or destroyed, only transferred or converted?
First Law
ExplanationConservation of energy principle.
#8
What is the process by which a substance changes from a gas to a liquid called?
Condensation
ExplanationGas to liquid transformation.
#9
What is specific heat capacity?
The amount of heat required to raise the temperature of a unit mass of a substance by one degree Celsius
ExplanationHeat needed to raise substance temperature.
#10
Which of the following is an example of conduction?
Heating a room with a radiator
ExplanationHeat transfer through direct contact.
#11
What is the principle behind a calorimeter?
To measure heat transfer
ExplanationDevice for measuring heat exchange.
#12
Which of the following is an example of a thermodynamic system?
A hot cup of coffee
ExplanationExample of a system with heat exchange.
#13
Which material has the highest thermal conductivity?
Copper
ExplanationMaterial with the highest heat transfer.
#14
What is the relationship between temperature and thermal energy?
Temperature is a measure of the average kinetic energy of particles, while thermal energy is the total kinetic energy of all particles in a substance
ExplanationTemperature versus total kinetic energy.
#15
Which statement best describes the process of radiation?
Transfer of heat through electromagnetic waves
ExplanationHeat transfer via electromagnetic waves.
#16
What is the name of the law that describes how the rate of heat transfer through a material depends on the material's thickness, area, and temperature difference?
Fourier's Law of Heat Conduction
ExplanationLaw governing heat flow in materials.
#17
What happens to the volume of a gas when it is heated at constant pressure?
It increases
ExplanationGas volume expansion with heating.
#18
Which law of thermodynamics states that the entropy of any isolated system always increases over time?
Second Law
ExplanationEntropy always increases in isolated systems.