- 1. An 18-g piece of a metal absorbs 1095 joules of heat energy, and its temperature changes from 20°C to 165°C. Calculate the specific heat capacity of the metal.
A) 8,823.8 J
B) 0.42 J/go C
C) 0.42 J
- 2. How many joules of heat are needed to raise the temperature of 12.0 g of aluminum from 20°C to 44°C, if the specific heat of aluminum is 0.90 J/g°C?
A) 259.2 J
B) 0.694 J
C) 0..694 J
- 3. When 15.0 g of water drops in temperature from 95.0 °C to 50.0 °C, how much heat energy is released? (c of H2O = 4.18 J/g °C)
A) 2821.5 J
B) -2821.5 J
C) 161.5 J
- 4. Convert 7oC to Kelvin.
A) -266 K
B) 280 oF
C) -266 oK
D) 280 K
- 5. Convert 272 K to Celsius.
A) -1 oC
B) 545 C
C) -1 F
D) 545 oC
- 6. Convert 100oF to Celsius.
A) -173 oC
B) 37.8 oC
C) 373 oC
D) 212 oC
- 7. Heat flows from _________ to _________ objects.
A) hot; cold
B) cold; hot
- 8. What factor does thermal energy NOT depend on?
A) temperature
B) mass
C) force
- 9. _______________ is the transfer of energy by waves moving through space.
A) Radiation
B) Convection
C) Conduction
- 10. _______________ is the transfer of thermal energy when particles of a fluid move from one place to another.
A) Radiation
B) Convection
C) Conduction
- 11. _______________ is the transfer of thermal energy with no overall transfer of matter, within a material or between materials that are TOUCHING.
A) Conduction
B) Radiation
C) Convection
- 12. If you increase the temperature of the particles inside a balloon, what will happen to the volume? ( Think about thermal expansion)
A) increase
B) stay the same
C) decrease
- 13. _____________ is the transfer of thermal energy.
A) Work
B) Heat
C) Temperature
- 14. Thermal energy is the total __________ and ___________ energy of all the particles in an object
A) work; heat
B) heat; kinetic
C) potential; kinetic
- 15. Which has more thermal energy, a giant iceberg or a warm pot of chili?
A) a pot of chili
B) an iceberg
- 16. Sunburn is caused by ______________.
A) conduction
B) convection
C) radiation
- 17. Warmth from the fireplace circulating through the house by moving air currents is an example of _____________.
A) conduction
B) radiation
C) convection
- 18. Cooking an egg in a pan is an example of ________________.
A) convection
B) conduction
C) radiation
- 19. Heat is a form of matter.
A) FALSE
B) TRUE
- 20. Heat is the transfer of thermal energy from one object to another because of a difference in
A) temperature.
B) mass.
C) specific heat.
- 21. What property of an object is related to the average kinetic energy of the particles in that object?
A) mass
B) temperature
C) specific heat
- 22. Matter is needed to transfer thermal energy by
A) radiation.
B) convection only
C) conduction and convection.
- 23. A vacuum, which is a place like outer space that has no matter, stops which two types of thermal energy transfer?
A) conduction and radiation
B) conduction and convection
C) radiation and convection
- 24. Which of the following materials conducts heat well?
A) plastic
B) wood
C) air
D) metal
- 25. Which of the following is a unit for heat?
A) kg
B) J/goC
C) oC
D) J
- 26. Convert 273 K to Fahrenheit.
A) 32 oF
B) 0 oF
C) -273 oF
D) 523.4 oF
- 27. Convert 49 oC to Fahrenheit.
A) 120.2 K
B) 120.2 oF
C) 9.4 oF
D) 9.4 F
- 28. The kinetic energy of the particles that make up an object increases as the particles' ________ increases.
A) volume
B) speed
C) potential energy
- 29. A material that reduces the flow of heat by conduction, convection, and radiation is a(an) _______.
A) matter
B) insulator
C) conductor
- 30. Through which of the following will convection most likely occur?
A) solids and liquids
B) gases and liquids
C) gases and solids
- 31. The air between the two layers of glass in double paned windows prevents heat transfer because it is a (an)_________________.
A) insulator
B) conductor
- 32. Which one of these is NOT a conductor?
A) copper pipes
B) frying pan
C) sweater
- 33. What is the main reason a tile floor feels colder to your bare feet than a carpeted floor?
A) your feet have a higher specific heat than the carpet
B) the tile floor is at a lower temperature
C) there is more surface area of contact with a tile floor
- 34. Which has more thermal energy, 200 g of water at 60 (o)C or 400 g of water at 60 (o)C ?
A) 400 g of water
B) 200 g of water
- 35. Hot air rises and cold air sinks because hot air is _________________ dense than cold air.
A) less
B) more
C) equally
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