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Heat And Thermo
Test Description: Conceptual review
Instructions: Answer all questions to get your test result.
1) How is energy transferred as heat directed?
A
from a low temperature to a high temperature
B
from low kinetic energy to high kinetic energy
C
from a high temperature to a low temperature
D
from low temperatures to low temperatures
2) What does it mean for something to be in thermal equilibrium?
A
heat increases rapidly
B
The masses of two systems are equal
C
no net energy as heat is exchanged
D
heat travels from low temperatures to high temperatures
3) one glass of water has a temperature of 40 degrees. Another has a temperature of 80 degrees. If you mixed the two together, predict what the temperature would be
A
the temperature would fluctuate rapidly
B
more than 80 degrees
C
Between 40 and 80 degrees (around 60 degrees)
D
less than 40 degrees
4) you raise the temperature of water from 20 degrees to 40 degrees. How would you describe the change in kinetic energy of the water molecules?
A
The energy is destroyed
B
The energy would remain constant and wouldn't change
C
The energy would increase due to the increase in temperature
D
The energy would decrease due to the increase in temperature
5) Temperatures increase when
A
energy is added as heat
B
energy has been removed as work
C
energy is added as work
D
energy is removed as heat
6) If a gas does positive work, what happens to the volume of the gas?
A
There is no volume
B
It increases
C
It remains the same
D
It decreases
7) As you increase the entropy of a system
A
the energy available to do work stays the same
B
The more energy there is available to do work
C
no work is done
D
The less energy available to do work
8) In order to change temperature, what must happen to the amount of energy?
A
Energy doesn't change with temperature change
B
Energy is only added to change temperature
C
Energy must be added or removed
D
Energy is only removed to change temperature
9) What is the unit for energy that is added or removed to change temperature?
A
Watt
B
Newton
C
Joule
D
m/s
10) If a system has low entropy (less disorder), does that determine how much work can be done?
A
There is no energy to do work
B
There is less energy available to do work
C
There is more energy available to do work
D
energy won't exist
*select an answer for all questions
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