Post-Test

‣ Now it’s time to measure what you've learned about heat and work in thermodynamic systems.

1. What is energy in transit called?

a. Thermodynamics
b. Temperature
c. Heat
d. Work

2. Which represents the SI unit for work?

a. Newton
b. Watts
c. Calorie
d. Joule

3. What refers to the sum of all kinetic and potential energies in the system?

a. Gravitational energy
b. Mechanical energy
c. Nuclear energy
d. Electrical energy

4. Which refers to the study of conversions between thermal energy and other forms of energy?

a. Thermal energy
b. Thermal expansion
c. Thermodynamics
d. Thermometer

5. What is a measure of how hot or cold an object is compared to a reference point?

a. Temperature
b. Conductor
c. Thermometer
d. Thermodynamics

6. A system's internal energy can be changed by transferring energy by either work, heat, or a combination of the two. What Law explains the system?

a. Law of heat
b. First law of thermodynamics
c. Second law of thermodynamics
d. Internal energy law

7. Which refers to the sum of kinetic and potential energies of its particles and their interactions?

a. Mechanical energy
b. Internal energy
c. External energy
d. Heat energy

8. When the work is done upon the object, that object gains energy. What type of energy is acquired by the objects upon which work is done?

a. Electrical energy
b. Heat energy
c. Mechanical energy
d. Work energy

9. Heat is added in our body by metabolizing food, and our body does work in breathing, walking, and other activities. If we return in the same state at the end of the day, how will you describe the work and heat of our body?

a. The amount of heat is equal to the work done
b. Internal energy is zero
c. Both a and b
d. Work done is greater than the heat added.

10. What happens to internal energy when both heat transfer (Q) and work done (W) are equal?

a. The internal energy is equal to the difference of heat and work. Increases
b. The internal energy is equal to the sum of heat and work. Decreases
c. The internal energy remains the same.
d. The internal energy has no net charge is not affected

11. Which of the following is an example of work converted into heat?

a. Heat engine
b. Hand rubbing
c. Gas stove
d. Hot air balloon

12. What happens to the molecules in the balloons when heated?

a. Molecules collide into the balloon with more energy
b. Molecules freeze into the balloon with less energy
c. Molecules collide into the balloon with less energy
d. Molecules freeze into the balloon with no energy

13. What is the net change in internal energy (ΔU) if the amount of work done (W) is the same as the amount of energy transferred in by heat (Q)?

a. The net internal energy is zero.
b. The net internal energy is 1.
c. The net internal energy is 100.
d. The net internal energy cannot be determined.

14. How does heat and work affect a system?

a. Heat and work both contribute to the total internal energy of a system
b. Heat and work do not affect the total internal energy of a system
c. Without heat and work, there will be no internal energy of the system
d. Heat and work affect the system in a negligible impact

15. Which of the following is NOT correct?

a. Heat and work are related.
b. Work is measured in joules.
c. Heat cannot be completely converted into work.
d. Heat is a form of energy.

Post-Test

Post-Test

1. What is energy in transit called?

2. Which represents the SI unit for work?

3. What refers to the sum of all kinetic and potential energies in the system?

4. Which refers to the study of conversions between thermal energy and other forms of energy?

5. What is a measure of how hot or cold an object is compared to a reference point?

6. A system's internal energy can be changed by transferring energy by either work, heat, or a combination of the two. What Law explains the system?

7. Which refers to the sum of kinetic and potential energies of its particles and their interactions?

8. When the work is done upon the object, that object gains energy. What type of energy is acquired by the objects upon which work is done?

9. Heat is added in our body by metabolizing food, and our body does work in breathing, walking, and other activities. If we return in the same state at the end of the day, how will you describe the work and heat of our body?

10. What happens to internal energy when both heat transfer (Q) and work done (W) are equal?

11. Which of the following is an example of work converted into heat?

12. What happens to the molecules in the balloons when heated?

13. What is the net change in internal energy (ΔU) if the amount of work done (W) is the same as the amount of energy transferred in by heat (Q)?

14. How does heat and work affect a system?

15. Which of the following is NOT correct?

Quiz Results