Warmth from the fireplace circulating through the house.

• 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) 0.42 J
B) 8,823.8 J
C) 0.42 J/go C

• 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) 161.5 J
B) 2821.5 J
C) -2821.5 J

• 4. Convert 7oC to Kelvin.

A) 280 K
B) -266 K
C) 280 oF
D) -266 oK

• 5. Convert 272 K to Celsius.

A) 545 C
B) -1 oC
C) 545 oC
D) -1 F

• 6. Convert 100oF to Celsius.

A) -173 oC
B) 373 oC
C) 37.8 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) Convection
B) Conduction
C) Radiation

• 11. _______________ is the transfer of thermal energy with no overall transfer of matter, within a material or between materials that are TOUCHING.

A) Convection
B) Radiation
C) Conduction

• 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) Temperature
B) Heat
C) Work

• 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) an iceberg
B) a pot of chili

• 16. Sunburn is caused by ______________.

A) conduction
B) radiation
C) convection

• 17. Warmth from the fireplace circulating through the house by moving air currents is an example of _____________.

A) convection
B) conduction
C) radiation

• 18. Cooking an egg in a pan is an example of ________________.

A) convection
B) radiation
C) conduction

• 19. Heat is a form of matter.

A) TRUE
B) FALSE

• 20. Heat is the transfer of thermal energy from one object to another because of a difference in

A) specific heat.
B) temperature.
C) mass.

• 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) conduction and convection.
B) radiation.
C) convection only

• 23. A vacuum, which is a place like outer space that has no matter, stops which two types of thermal energy transfer?

A) radiation and convection
B) conduction and convection
C) conduction and radiation

• 24. Which of the following materials conducts heat well?

A) metal
B) wood
C) air
D) plastic

• 25. Which of the following is a unit for heat?

A) J/goC
B) kg
C) oC
D) J

• 26. Convert 273 K to Fahrenheit.

A) 523.4 oF
B) 32 oF
C) 0 oF
D) -273 oF

• 27. Convert 49 oC to Fahrenheit.

A) 9.4 F
B) 120.2 K
C) 9.4 oF
D) 120.2 oF

• 28. The kinetic energy of the particles that make up an object increases as the particles' ________ increases.

A) volume
B) potential energy
C) speed

• 29. A material that reduces the flow of heat by conduction, convection, and radiation is a(an) _______.

A) conductor
B) matter
C) insulator

• 30. Through which of the following will convection most likely occur?

A) solids and liquids
B) gases and solids
C) gases and liquids

• 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) sweater
B) frying pan
C) copper pipes

• 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) there is more surface area of contact with a tile floor
C) the tile floor is at a lower temperature

• 34. Which has more thermal energy, 200 g of water at 60 (o)C or 400 g of water at 60 (o)C ?

A) 200 g of water
B) 400 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

Is warmth from a fireplace conduction convection or radiation?

Is warming hand over a radiator conduction convection or radiation?

How does a fireplace transfer heat?

Is a hot plate conduction convection or radiation?