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- 1. Multiple Choice_______________ describes how much energy is required to raise an object's temperature.ConductionConvectionSpecific HeatRadiation
- 2. Multiple ChoiceCalculate the energy transferred when raising the temperature of 16kg of water by 3˚C (c=4,186 J/(kg K))785 J1.26*10^5 J2.2 kJ2.0*10^5 J
- 3. Multiple ChoiceIn terms of differences in temperature between objects in thermal contact, in what direction does heat flow?from hot temperature to cold temperaturefrom cold temperature to medium temperaturefrom cold temperature to hot temperaturefrom hot temperature to medium temperature
- 4. Multiple Choice
If water heats slower than sand, then ----- is said to have a higher specific heat capacity.
Sand
Water
They both have the same specific heat capacity.
- 5. Multiple ChoiceWhat is the total of all the energies in a substance?The kinetic energyThe internal energyThe potential energy
- 6. Multiple ChoiceWhat is the symbol for Thermal Energy?QtmC
- 7. Multiple ChoiceWhat unit do you use to measure Thermal Energy?J/Kg ºCKgºCJ
- 8. Multiple ChoiceWhat is the equation to measure change in Thermal Energy?Q=mc∆tQ=mcQ= ∆mctm=QC
- 9. Multiple ChoiceA material was cooled from 100ºC to 40ºC. What is the temperature change?60ºC40ºC-60ºC-40ºC
- 10. Multiple ChoiceThe amount of energy required to raise the temperature 1ºC for every kilogram is called____?Thermal EnergySpecific HeatTemperatureKinetic Energy
- 11. Multiple Choice
Copper, Stainless Steel, Carbon Steel, and Zinc were all heated using the same thermal energy. What material would be the coolest after being heated?CopperCarbon SteelZincStainless Steel - 12. Multiple ChoiceA high specific heat means...It heats up quickly with energy addedIt requires more energy to change temperature
- 13. Multiple Choice
Select the state changes that latent heat of fusion applies to.
melting
evaporating
freezing
condensing
sublimation
- 14. Multiple Choice
The diagram shows a heating curve for ice. Which line represents the ice melting?
A
B
C
D
E
- 15. Multiple Choice
Why are lines B and D flat?
The ice is melting
The ice is freezing
All of the thermal energy is used to break the bonds
They stopped the stopwatch
They stopped heating the ice.
- 16. Multiple Choice
This formula is used to find the amount of heat (energy) neccesary when there's a phase change
Q= (h)(ΔT)
Q=(m)(L)
Q=(m)(c)(ΔT)
Q=(k)(A)(dT)
- 17. Multiple Choice
Latent heat is
the heat absorbed or released at a boiling process during a change of phase
the heat absorbed or released at a constant temperature during a change of phase
the heat absorbed or released at a constant temperature during a change of phase of 1 kg object
the heat absorbed or released by an object to increase or decrease its temperature by 1 degree Celcius
- 18. Multiple Choice
How much energy is required to freeze 150 g of water?
50 100 cal
339 000 J
339 000 cal
50 100 J
- 19. Multiple Choice
How much energy is required to change 5 kg of ice at 0 C into water at the same temperature? (latent heat of fusion is 3.36 X J/kg )
16.1 X J
16.8 X J
15.1 X cal
16.8 X cal
- 20. Multiple Choice
Consider the following temperature-time graph when a solid is heated. which part of the graph involves latent heat of vaporization?
Part I
Part II
Part III
Part IV
- Answer choicesTagsAnswer choicesTags