Thermodynamics- Heat & Work- G9- Sync. Class

What is the study of energy, heat, and work in a system called?

• Mechanics

• Kinetic Energy

• Thermodynamics

• Potential Energy

Which of the following correctly describes heat?

• The energy transferred due to temperature difference

• The amount of force applied to an object

• The total energy stored in a system

• The speed of molecular motion

What is the SI unit of heat and work?

• Newton (N)

• Pascal (Pa)

• Watt (W)

• Joule (J)

Which thermodynamic process occurs at constant temperature?

• Adiabatic

• Isothermal

• Isobaric

• Isochoric

Which real-life example represents an isobaric process?

• Boiling water in a sealed container

• Rapid air escape from an aerosol can

• Gas compressed in a sealed tank

• Air expanding in a balloon as it is heated

Why does an aerosol can feel colder after spraying?

• The gas inside undergoes an adiabatic expansion

• The gas inside undergoes an isochoric process

• The heat is transferred to the can rapidly

• The temperature increases due to high pressure

What happens to gas in a closed, flexible container when heated?

• Its pressure remains the same

• It undergoes an isochoric process

• It cools down

• Its volume increases

Which thermodynamic principle explains why a hot air balloon rises?

• Decrease in atmospheric temperature

• Expansion of heated air, reducing density

• Increase in air pressure

• Increase in gravity’s effect

• Which statement about work in thermodynamics is true?

• • Work is done when heat is transferred between objects

• • Work is done when force is applied with no movement

• • Work can only be done if temperature changes

• • Work is done when a system’s volume changes due to applied force

Which thermodynamic process takes place at constant pressure?

• Isobaric

• Isothermal

• Adiabatic

• Isochoric