Chap 6 (PHYS 1415)
Which law of thermodynamics is a restatement of the conservation of energy as it applies to thermal systems?
First Law of Thermodynamics.
Which of the following expands most when the temperature is increased? Equal volumes of: helium, iron, ice water, wood, or all expand the same?
Helium.
Which of the following warms up faster when heat is applied? Iron, water, glass, or wood?
Iron.
The white-hot sparks from a fireworks sparkler that strike your skin do not cause injury because...
the energy per molecule is high, but the total energy transferred is small.
The lowest temperature possible in nature is...
-273*C.
Which is the smallest unit of measurement for temperature? 1 Kelvin? 1 degree Celsius? 1 Fahrenheit degree? All are the same?
1 Fahrenheit degree.
What would be the temperature of 50 g of 20*C water mixed with 80 g of 40*C water?
28.3*C.
A volume of gas has a temperature of 10*C. The same gas twice as hot has a temperature of...
293*C.
What would be the temperature of 40.0 g of 22*C water mixed with 60.0 g of 80*C water?
56.8*C
The temperature of water rises when 2.00 calories are added. It will rise the same when...
8.38 J are added.
The temperature of melting ice is: 32*F or 0*C?
Both.
On which degree is 0 degrees the freezing point of water?
Celsius.
When a bimetallic bar composed of copper and iron strips is heated, the bar bends toward the iron strip because...
Copper expands more than iron.
Which law of thermodynamics states that no system can reach absolute zero?
The Third Law of Thermodynamics.
Water at 4*C will expand when it is slightly...
Warmed and cooled.
Which of the following expands most when the temperature is lowered? Iron? Water at 4*C? Wood? Helium? Or, none expand when the temperature is lowered?
Water at 4*C.
Pour a liter of 40*C water into a liter of 20*C water and the final temperature of the two liters becomes...
at or about 30*C.
A pre-electronic thermostat employs a coiled...
bimetallic strip.
Thermal energy can be measured in...
calories, Calories, joules..for special cases.
As the hot iron ring cools, the diameter of the hole...
decreases.
When work is done BY a system and no heat is added, the temperature of the system...
decreases.
If the temperature of a sample 4*C water slightly increases, the sample of water...
expands.
The direction of natural processes is from states of...
higher order to lower order.
Heat is thermal energy that flows from....
hot to cold.
Because a refrigerator operates with some kind of motor, leaving the refrigerator door open in a closed room on a hot day...
increases room temperature.
As a system becomes more disordered, entropy...
increases.
The fact that desert sand is very hot in the day and very cold at night is evidence that sand has a...
low specific heat capacity.
Whether one object is warmer than another object has to do with...
molecular kinetic energy.
If the specific heat capacity of water were lower than it is, ponds in the cold of winter would be...
more likely to freeze.
At absolute zero, a substance has...
no more energy to give up.
The open spaces in a crystal lattice of ice contain...
nothing.
San Francisco has milder winters than Washington D.C. due to water's high...
specific capacity.
Entropy is most closely related to...
the second law of thermodynamics.
Heat is simply another term for...
thermal energy that flows from hot to cold.
The fact that a thermometer takes its own temperature illustrates...
thermal equilibrium.
The motion of particles that contribute to temperature is...
translational.
If the same quantity of heat is added to both a 1-liter and a 2-liter container of water, the temperature change of water is...
twice.
During a very cold winter, water pipes sometimes burst because...
water expands when freezing.
The filling of a hot apple pie is hotter than the crust due to...
water in the filling that better retains thermal energy.
Consider a sample of water at 20*C. If the temperature is slightly increased, the water...
will expand.