jeopardy jeopardy phy101 chapter 5 review study of heat
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JeopardyJeopardyJeopardyJeopardyPHY101
Chapter 5 Review
Study of Heat
Study of Heat
BasicsConstant
sHeat Transfer Laws Potpourri
$100 $100 $100 $100 $100 $100
$200 $200 $200 $200 $200 $200
$300 $300 $300 $300 $300 $300
$400 $400 $400 $400 $400 $400
Basics $100
What is meant by thermal contact?
ANSWER
ANSWER
Basics $200
What is meant by thermal equilibrium?
ANSWER
Basics $300
Name the three temperature scales that are in common use. Give the boiling point and the freezing point of water, and absolute temperature in each scale.
ANSWER
Basics $400
What does Temperature measure?
Constants $100
ANSWER
What is Avogadro’s number?
ANSWER
What is the Boltzmann’s Constant?
Constants $200
ANSWER
Constants $300
What is the Universal Gas Constant?
Constants$400
ANSWER
What is the Specific Heat of water?
Heat $100
ANSWER
What is Heat?
Heat $200
ANSWER
What is Internal energy?
Heat $300
ANSWER
What is meant by thermal expansion?
Heat$400
ANSWER
Temperature at which water has the greatest density.
Transfer $100
ANSWER
What are the 3 methods of Heat Transfer?
Transfer $200
ANSWER
“Firewalkers" step on the hot ashes and coals from a wood fire without getting their feet burned. How might this be possible?
Transfer $300
ANSWER
A wood stove in the corner of a cabin causes the entire cabin to become heated. This is an example of __________.
Transfer $400
ANSWER
Which mechanism of heat transfer will work in a vacuum?
Laws $100
ANSWER
State the zeroth law of thermodynamics.
Laws $200
ANSWER
State the first law of thermodynamics.
Laws $300
ANSWER
State the second law of thermodynamics.
Laws $400
ANSWER
What is the Ideal Gas Law?
Potpourri $100
ANSWER
When water boils, its temperature _______.
Potpourri $200
ANSWER
When droplets of condensation form on the outside of a glass of ice water, it must be that in the air right next to the glass is at _______.
Potpourri $300
ANSWER
Natural processes tend to increase the _____ of thermodynamic systems.
Potpourri $400
ANSWER
The air temperature where the humidity reaches the saturation density is called the ___________.
Basics$100
Answer
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What is meant by thermal contact?
Heat energies can be exchanged.
Basics$200
Answer
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What is meant by thermal equilibrium?
Both objects are at the same temperature.
Basics$300
Answer
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Name the three temperature scales that are in common use. Give the boiling point and the freezing point of water, and absolute temperature in each scale.
Temperature
at 1 atm.
Fahrenheit Celsius Kelvin
Boiling water 212OF 100OC 373.15 K
Freezing Water 32OF 0OC 273.15 K
Absolute Zero -459.67OF -273.15OC 0K
Basics$400
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What does Temperature measure?
The average kinetic energy of atoms and molecules in a substance. K.E. ATOM = ½mvAVE² = ½kBT where T in Kelvin
Boltzmann’s Constant kB =1.38*10-23 J/K
Constants$100
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What is Avogadro’s number?NA = 6.02 *1023 units
1 mole contains Avogadro’s number.
Constants$200
Answer
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What is the Boltzmann’s Constant?
kB =1.38*10-23 J/K
Constants$300
Answer
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What is the Universal Gas Constant?R = NAkB = 8.31 J/(mole*K)
Constants$400
Answer
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What is the Specific Heat of water?cW = 1.00 cal/(g*OC) = 4186 J/(kg*K)
Q = mcWT
Heat $100
Answer
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What is Heat?
The form of energy that is transferred between two substances because they have different temperatures.
Heat $200
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What is Internal energy?
The sum of the kinetic and potential energies of all the atoms and molecules in a substance.
Heat $300
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What is meant by thermal expansion?The size of an object will change due a temperatureUsually, increasing temperature but cause an increase in size.L = LOT where = thermal coefficient in 1/OC
Heat $400
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Temperature at which water has the greatest density.4 OC
The density of water decreases as water cools from 4OC to 0OC.
Transfer $100
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What are the 3 methods of Heat Transfer?
Conduction Direct (Needs physical Contact)Convection Occurs in fluidsRadiation Carried by photon
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Firewalkers" step on the hot ashes and coals from a wood fire without getting their feet burned. How might this be possible?
The ashes are poor conductors of heat.H = kAT/L where k = thermal conductivity coefficient in Watts/(m*K)
Transfer $300
Answer
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A wood stove in the corner of a cabin causes the entire cabin to become heated. This is an example of convection.
Transfer $400
Answer
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Which mechanism of heat transfer will work in a vacuum?Radiation
Power = AT4 = 5.67*10-8 Watts/(m²*K4) = emissitivity constant is between 0 (reflector) & 1 (absorber)
Laws $100
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State the zeroth law of thermodynamics.
If Body A in in thermal equilibrium with Body B &
If Body B in in thermal equilibrium with Body T then
Body A in in thermal equilibrium with Body T.
Laws $200
Answer
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State the first law of thermodynamics.
Conservation of energy
Internal Energy of a system = Q – Work done by a system OR
Internal Energy of a system = Q + Work done on a system
Laws $300
Answer
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State the second law of thermodynamics.
There are no perfect heat engines.
Laws $400
Answer
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What is the Ideal Gas Law?
PV = NkBT = nRT
Potpourri $100Answer
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When water boils, its temperature stays constant.
Potpourri $200Answer
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When droplets of condensation form on the outside of a glass of ice water, it must be that in the air right next to the glass.
The relative humidity is near 100%.
Potpourri $300Answer
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Natural processes tend to increase the entropy of thermodynamic systems
Potpourri $400Answer
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The air temperature where the humidity reaches the saturation density is called the dew point.
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