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WorksheetsHeat and Thermo
Total questions: 20
Worksheet time: 10mins
The disorder in a system is directly measured by its...
Temperature
Entropy
Heat
Phase
Time's Arrow (think entropy!) implies the...
B theory of time
block universe model
possibility of time travel
heat death of the universe
Two objects are in a closed system. One loses 5 J/K of entropy. Statistically, we can predict that the second object will...
Gain less than 5 J/K of entropy
Gain more than 5 J/K of entropy
Lose exactly 5 J/K of entropy
Remain the same
The relationship between temperature and entropy is...
direct
inverse
indirect
contrapositive
Erwin Schrodinger defined life as...
(Hint: related to the disorder of the universe)
a violation of the 2nd Law of Thermodynamics
crystalline luxoid structures
looped thermodynamic systems
localized negative entropy
As the temperature of a substance increases, its internal particles will, on average...
move faster
move slower
remain at rest
maintain constant velocity
As the average kinetic energy of a gas in a balloon increases, the balloon will...
PV = nRT
get colder
deflate more
inflate more
Air is ...
a fluid
95% oxygen
weightless
a low entropy substance
A 100,000,000 °K star is sitting in a totally empty universe with nothing else in it but the star (treat the star as one unified object with no internal plasma flow). Is there heat in the system, why are why not?
No, because Kelvin is a logarithmic scale
Yes, because the star is extremely hot
No, because there is no thermal transfer to another object
Yes, because the star emits thermions
The phrase "heat rises" is mostly-wrong because...
conduction works both horizontally and vertically
radiation is emitted omnidirectionally
air is not a fluid and doesn't undergo convection
hot air rises but heat has no directionality
You burn your feet while walking on hot sand at the beach. This process of thermal transfer is...
conduction
convection
radiation
transduction
Boiling water bubbles due to heat being applied to the lowest layer of water. This process of thermal transfer is...
conduction
convection
radiation
transduction
A day old burger is kept warm under a lamp at a fast food restaurant. This process of thermal transfer is...
conduction
convection
radiation
transduction
Convection requires a medium that can...
move freely due to being in a gaseous state
move freely due to being in a liquid state
circulate due to different relative densities
absorb a large amount of heat without melting
The type of thermal transfer that does not require a medium is...
conduction
convection
radiation
transduction
If two objects are in thermal equilibrium...
they have the same temperature
they have the same internal kinetic energy
heat will flow from the bigger object to the smaller object
they are at absolute zero
Object A is in thermal equilibrium with Object B. Object B is in thermal equilibrium with Object C. Therefore...
Object A has more thermal energy than object C
Object A is in thermal equilibrium with Object C
Object C has more thermal energy than Object A
Object B has twice as much thermal energy as A or C
If a crystalline substance is cooled to 0 °K, then...
its internal energy will increase
all of its atomic and molecular motion will stop
its particles will vibrate and spin faster
its component atoms and molecules will undergo fission
Water is virtually unique among substances on the planet Earth because...
it has an extremely low sublimation point
it's found in its molecular state naturally
it cannot absorb thermal energy
it gets less dense as it freezes
100% efficiency for any and every form of energy transfer is impossible due to...
ionizing radiation
luxoid bonding
transtemperatureization
entropy
