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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 low kinetic energy to high kinetic energy
B
from a high temperature to a low temperature
C
from low temperatures to low temperatures
D
from a low temperature to a high temperature
2) What does it mean for something to be in thermal equilibrium?
A
no net energy as heat is exchanged
B
heat travels from low temperatures to high temperatures
C
The masses of two systems are equal
D
heat increases rapidly
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
more than 80 degrees
B
the temperature would fluctuate rapidly
C
less than 40 degrees
D
Between 40 and 80 degrees (around 60 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 would increase due to the increase in temperature
B
The energy is destroyed
C
The energy would remain constant and wouldn't change
D
The energy would decrease due to the increase in temperature
5) Temperatures increase when
A
energy has been removed as work
B
energy is added as heat
C
energy is removed as heat
D
energy is added as work
6) If a gas does positive work, what happens to the volume of the gas?
A
It decreases
B
It remains the same
C
It increases
D
There is no volume
7) As you increase the entropy of a system
A
the energy available to do work stays the same
B
no work is done
C
The less energy available to do work
D
The more energy there is available to do work
8) In order to change temperature, what must happen to the amount of energy?
A
Energy is only added to change temperature
B
Energy is only removed to change temperature
C
Energy must be added or removed
D
Energy doesn't change with temperature change
9) What is the unit for energy that is added or removed to change temperature?
A
m/s
B
Watt
C
Joule
D
Newton
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
energy won't exist
C
There is less energy available to do work
D
There is more energy available to do work
*select an answer for all questions
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