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WorksheetsThermal Energy Unit Test
Total questions: 40
Worksheet time: 20mins
The molecules in warm water move faster than molecules in cold water.
true
false
When water gets hotter, the molecules move _____________.
slower
faster
When water gets colder, the molecules move ______________.
slower
faster
What is a measure of the average speed of the molecules of a thing?
energy
molecules
temperature
collision
At what temperature is there zero molecule movement?
100°C
0°C
32°F
absolute zero
When a thing gets warmer and its molecules are moving faster, it has ____________ kinetic energy.
less
the same
more
too much
When a thing gets colder and its molecules are moving slower, it has ____________ kinetic energy.
less
the same
more
not enough
What is the measure of the average kinetic energy of the molecules of a thing?
energy
equilibrium
transfer
temperature
After a collision, kinetic energy transfers from the slower-moving object to the faster-moving object.
true
false
Energy isn't created or destroyed.
true
false
Energy transfers between two objects until they reach ___________________.
temperature
collision
equilibrium
100°C
What is a balanced state where the objects are stable?
kinetic energy
equilibrium
collision
system
Colder things can have more total kinetic energy than warmer things if they are made up of more ___________________.
molecules
energy
collisions
heat
An object with more molecules has more __________________ than an object with fewer molecules.
temperature
heat
kinetic energy
collisions
When a thing gains or loses energy, the energy gained or lost is divided among all the molecules of the thing.
true
false
Thermal energy is the same thing as temperature.
true
false
At equilibrium, what is equal?
the number of molecules in each object
the temperature of each object
the thermal energy of each object
the weight of each object
What is the measure of how hot or cold something is?
temperature
equilibrium
thermal energy
heat
What is a group of atoms joined together in a particular way?
collision
temperature
molecule
energy
What type of energy is energy that an object has because it is moving?
thermal energy
heat energy
total energy
kinetic energy
What is a set of interacting parts forming a complex whole?
molecule
system
equilibrium
energy
What is the moment when two object hit each other?
heat
transfer
energy
collision
What does it mean to move from one object to another or one place to another?
collision
energy
transfer
equilibrium
What does it mean when something becomes different over time?
equilibrium
change
stability
transfer
What does it mean when something stays mostly the same?
stability
change
transfer
collision
What type of energy is energy that an object has because of the movement of its molecules?
kinetic energy
thermal energy
total energy
average energy
Which of the following is true about the sample shown? Choose all that apply.
The sample is cold.
The sample is hot.
The sample has fast-moving molecules.
The sample has slow-moving molecules.
The sample has low kinetic energy.
Which of the following is true about the sample shown? Choose all that apply.
The sample is hot.
The sample is cold.
The sample has fast-moving molecules.
The sample has slow-moving molecules.
The sample has high kinetic energy.
What is the total kinetic energy (thermal energy) of this object?
5
24
4
12
What is the average kinetic energy (temperature) of the object?
24
5
4
12
Choose the object with the highest total kinetic energy (thermal energy).
Choose the object with the lowest average kinetic energy (temperature).
What will happen if Sample A collides with Sample B? Choose all that apply.
Sample A will cool down.
Sample B will warm up.
Energy will transfer from Sample A to Sample B.
Energy will transfer until both samples are the same temperature.
Choose the sample with the highest thermal energy.
Choose the sample with the highest temperature.
What will happen is Sample A collides with Sample B?
Sample A will cool down.
Sample B will heat up.
Sample A will transfer it's energy to Sample B.
Sample B will transfer it's energy to Sample A.
Which sample has the highest average kinetic energy (temperature)?
Sample A
Sample B
Which sample has the lower average kinetic energy (temperature)?
Sample C
Sample D
Which of the following diagrams are correct?
Is there a limit to how cold something can get? If so, what is the limit?
Yes; absolute zero
No
Yes, 0°C
Yes, 100°C
