Vocabulary
Key Concepts
Examples 1
Examples 2
Examples 3
100
The average kinetic energy of an object
Temperature
100
When a thing gets hotter, its molecules are moving...
Faster
100
Soup of the same temperature was placed in both bowls. Which one had more thermal energy?
Bigger bowl because it had more molecules
100
Explain the total and average KE of a very small, but very hot flame
High average KE and low total KE
100
Give an example where a substance has low average KE and high thermal energy (total KE)
Anything large and cooler in temp
200
The total amount of energy in a substance
Thermal energy
200
When a thing gets colder, its molecules are moving...
slower
200
Find the average of these numbers:
3, 5, 7, 10, 5
6
200
Which has more thermal energy: a large block of ice or a small cup of warm coffee?
Large block of ice
200
Give an example of a substance with high average KE and high total KE
A giant fire (large and hot)
300
The moment when two objects hit each other
Collision
300
Temperature is a measure of the ____________ kinetic energy.
Average
300
Find the total kinetic energy is each the following numbers represented the KE in each molecule:
4, 2, 8, 6, 10
30
300
A substance that absorbs heat will cause the average KE to (increase or decrease)?
Increase
300
Give an example of a substance with low average KE and low thermal energy
Small piece of ice (something small and cool)
400
A balanced state in which a system is stable
Equilibrium
400
When a thing gains of loses energy, the energy gained/lost is divided among ______ the molecules of a thing
all
400
What is the equilibrium average KE of Sam and Mari's laptop?
20
400
Calculate the average KE after the two substances reach equilibrium
26.15
400
Give an example of a substance that has high average KE and low total KE
Small and hot (a firework)
500
A measure of how hot or cold something is
Temperature
500
When two things reach equilibrium, they will have the same...
Temperature or average kinetic energy
500
Which set of laptops will have a higher average KE when equilibrium is reached? (no calculation needed here)
Odessa and Arun
500
What is the average KE of Odessa and Arun's laptop when they reach equilibrium?
~16
16.15
500
What is wrong with this model at equilibrium?
Not all molecules have the same KE