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Heat & Thermodynamics

Heat & Thermodynamics. Test Prep Game. What is the energy transferred to or from a unit of mass of a substance during a phase change called? Latent Heat Specific Heat Capacity Internal Energy Thermal Energy.

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Heat & Thermodynamics

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  1. Heat & Thermodynamics Test Prep Game

  2. What is the energy transferred to or from a unit of mass of a substance during a phase change called? • Latent Heat • Specific Heat Capacity • Internal Energy • Thermal Energy

  3. What is the energy transferred to or from a unit of mass of a substance during a phase change called? • Latent Heat • Specific Heat Capacity • Internal Energy • Thermal Energy

  4. A 0.075 kg object at 93 C is placed in 0.150 kg water with an initial temperature of 25 C. The final temperature of the object and water is 29 C. What is the specific heat capacity of the object (Cpw = 4186 J/kg C)? • 260 J/kg C • 520 J/kg C • 129 J/kg C • 1040 J/kg C

  5. A 0.075 kg object at 93 C is placed in 0.150 kg water with an initial temperature of 25 C. The final temperature of the object and water is 29 C. What is the specific heat capacity of the object (Cpw = 4186 J/kg C)? • 260 J/kg C • 520 J/kg C • 129 J/kg C • 1040 J/kg C

  6. How much work is done by 0.020 m3 of gas if it’s pressure increases by 2.0 x 105 Pa and the volume remains constant? • -4000 J • +4000 J • 0 J • 1 x 107 J

  7. How much work is done by 0.020 m3 of gas if it’s pressure increases by 2.0 x 105 Pa and the volume remains constant? • -4000 J • +4000 J • 0 J • 1 x 107 J

  8. A volume of cool air rapidly descends from the top of a mountain. The temperature increases as the volume decreases and the pressure increases. Which thermodynamic process is taking place? • Adiabatic • Isovolumetric • Isobaric • Isothermal

  9. A volume of cool air rapidly descends from the top of a mountain. The temperature increases as the volume decreases and the pressure increases. Which thermodynamic process is taking place? • Adiabatic • Isovolumetric • Isobaric • Isothermal

  10. Gas within a piston is compressed from 1.55 x 10-2 m3 to 9.5 x 10-3 m3. what quantity of work is done if the compression occurs at a constant pressure of 3.0 x 105 Pa? • 1800 J • 3600 J • -3600 J • -1800 J

  11. Gas within a piston is compressed from 1.55 x 10-2 m3 to 9.5 x 10-3 m3. what quantity of work is done if the compression occurs at a constant pressure of 3.0 x 105 Pa? • 1800 J • 3600 J • -3600 J • -1800 J

  12. A steam engine takes in 2750 J of energy as heat, gives up 1550 J of energy to the surroundings and does 850 J of work. What is the change in internal energy of the engine? • 5150 J • 3450 J • 2050 J • 350 J

  13. A steam engine takes in 2750 J of energy as heat, gives up 1550 J of energy to the surroundings and does 850 J of work. What is the change in internal energy of the engine? • 5150 J • 3450 J • 2050 J • 350 J

  14. Which of the following best describes a state of Thermal Equilibrium? • Both systems have the same mass. • Both systems have the same volume. • Both systems have the same temperature. • Both systems contain the same amount of internal energy.

  15. Which of the following best describes a state of Thermal Equilibrium? • Both systems have the same mass. • Both systems have the same volume. • Both systems have the same temperature. • Both systems contain the same amount of internal energy.

  16. Which of the following correctly describes Thermal Expansion? As the temperature increases, • the volume of the substance increases • the volume of the substance decreases • the density of the substance increases • the density of the substance decreases

  17. Which of the following correctly describes Thermal Expansion? As the temperature increases, • the volume of the substance increases • the volume of the substance decreases • the density of the substance increases • the density of the substance decreases

  18. What is 235 K when measured in degrees Celsius? • 508 C • 203 C • -38 C • -68 C

  19. What is 235 K when measured in degrees Celsius? • 508 C • 203 C • -38 C • -68 C

  20. Which temperature is widely used in science, and applied to non-scientific uses throughout most of the world? • Rankine • Celsius • Fahrenheit • Kelvin

  21. Which temperature is widely used in science, and applied to non-scientific uses throughout most of the world? • Rankine • Celsius • Fahrenheit • Kelvin

  22. Convert 36.7 C to degrees Fahrenheit. • 309.7 F • 123.7 F • 52.4 F • 98.1 F

  23. Convert 36.7 C to degrees Fahrenheit. • 309.7 F • 123.7 F • 52.4 F • 98.1 F

  24. What term is defined as the energy transferred between objects with different temperatures? • Internal Energy • Work • Heat • Thermal Equilibrium

  25. What term is defined as the energy transferred between objects with different temperatures? • Internal Energy • Work • Heat • Thermal Equilibrium

  26. What must be true for energy to be transferred between two bodies? The two bodies must: • have different volumes • be at different temperatures • have different masses • be in thermal equilibrium

  27. What must be true for energy to be transferred between two bodies? The two bodies must: • have different volumes • be at different temperatures • have different masses • be in thermal equilibrium

  28. If energy is transferred from an object with a temperature, T1, to an object with a temperature, T2, what must be true? • T1 < T2 • T1 = T2 • T1 > T2 • More information is needed

  29. If energy is transferred from an object with a temperature, T1, to an object with a temperature, T2, what must be true? • T1 < T2 • T1 = T2 • T1 > T2 • More information is needed

  30. What is the process by which energy is transferred by the motion of cold and hot material? • Conduction • Insulation • Convection • Radiation

  31. What is the process by which energy is transferred by the motion of cold and hot material? • Conduction • Insulation • Convection • Radiation

  32. Which of the following is NOT a good thermal insulator? • Ceramic • Iron • Fiberglass • Cork

  33. Which of the following is NOT a good thermal insulator? • Ceramic • Iron • Fiberglass • Cork d

  34. A 0.45 kg stone is dropped from a cliff. When the stone strikes the ground, the internal energy of the stone and ground increases by 1770 J. If the stone was initially at rest, how high was the cliff? • 206 m • 177 m • 401 m • 802 m

  35. A 0.45 kg stone is dropped from a cliff. When the stone strikes the ground, the internal energy of the stone and ground increases by 1770 J. If the stone was initially at rest, how high was the cliff? • 206 m • 177 m • 401 m • 802 m d

  36. What is the quantity of energy needed to raise the temperature of a unit mass of a substance by 1 C called? • Latent Heat • Specific Heat Capacity • Internal Energy • Thermal Energy

  37. What is the quantity of energy needed to raise the temperature of a unit mass of a substance by 1 C called? • Latent Heat • Specific Heat Capacity • Internal Energy • Thermal Energy d

  38. Which property of a substance is NOT needed to determine the amount of energy transferred as heat to or from a substance? • Temperature • Specific Heat Capacity • Volume • Mass

  39. Which property of a substance is NOT needed to determine the amount of energy transferred as heat to or from a substance? • Temperature • Specific Heat Capacity • Volume • Mass d

  40. The entropy of a system can increase, decrease or remain constant, but the total entropy of the universe is always _______. • Decreasing • Increasing • Negative • Zero

  41. The entropy of a system can increase, decrease or remain constant, but the total entropy of the universe is always _______. • Decreasing • Increasing • Negative • Zero d

  42. A 0.25 kg metal bolt gives up 3.6 x 103 J of energy as heat to the surrounding water. The specific heat capacity of the bolt is 360 J/kg C. What is the change in the bolt’s temperature? • 0.40 C • 2.5 C • 4.0 C • 40.0 C

  43. A 0.25 kg metal bolt gives up 3.6 x 103 J of energy as heat to the surrounding water. The specific heat capacity of the bolt is 360 J/kg C. What is the change in the bolt’s temperature? • 0.40 C • 2.5 C • 4.0 C • 40.0 C d

  44. An engine takes in 7.6 x 105 J of energy as heat and gives up 5.7 x 105 J of heat to the surroundings. What is the efficiency of the engine? • 33% • 25% • 50% • 46%

  45. An engine takes in 7.6 x 105 J of energy as heat and gives up 5.7 x 105 J of heat to the surroundings. What is the efficiency of the engine? • 33% • 25% • 50% • 46% d

  46. What are the units for Specific Heat? • J/kgF • Jm/kgC • J/kgC • N/kgsecC

  47. What are the units for Specific Heat? • J/kgF • Jm/kgC • J/kgC • N/kgsecC d

  48. What is the First Law of Thermal Dynamics? • U = Q + W • U = Q – W • U = Q x W • U = Q/W

  49. What is the First Law of Thermal Dynamics? • U = Q + W • U = Q – W • U = Q x W • U = Q/W d

  50. A wok is used to heat 100.0 g of olive oil from 20.0 C to 190 C. The specific heat of the oil is 2000 J/kg C. How much head was added to the oil? • 3,400 J • 17,000 J • 68,000 J • 34,000 J

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