Vocabulary
Key Concepts
Scenarios
True or False
Random
100
This can be found by adding all of the numbers to get a total and then dividing by the number of numbers that were added.
What is Average?
100
DOUBLE POINTS
When a thing gets hotter, _____________.
it's molecules are moving faster
100
TRIPLE POINTS
I am cooking rice in a pot. When I leaves the pot on the stove for awhile, the temperature of the rice increases. What happens to the molecules of the rice when the temperature increases?
The energy in the molecules of the rice increases.
100
Energy is neither created nor destroyed, it transfers.
What is true?
100
TRIPLE POINTS
Heat Energy produced by the Sun is transferred to Earth by
Radiation
200
This is the type of energy that an object has because it is moving.
What is Kinetic Energy?
200
Temperature is a measure of the ______ ____ ____ of the molecules of a thing.
Average Kinetic Energy
200
Eric pours some iced tea into a glass. When he puts the iced tea in the glass, the energy of the glass decreases. What must be true of the energy of the iced tea?
Its energy increases while the energy of the glass decreases
200
In order for substances to reach equilibrium, both of the objects have to transfer temperatures back and forth.
What is false? (Hot substances transfer to colder)
200
DOUBLE POINTS
What is the First Law of Thermodynamics?
Energy cannot be created or destroyed; it is transferred from one thing to another.
300
This is otherwise known as the average kinetic energy of a thing...
What is temperature?
300
Energy is not created or destroyed. Therefore, as energy transfers, it _________ in one part of the ________ as it _______________ in another part of the system.
increases, system, decreases.
300
A can of soda has been in a hot car all day. The temperature of the soda has increased, so what has happened to the molecules of the soda?
the energy/speed has increased
300
The hotter something is, the slower its molecules move.
What is false? (they move faster)
300
DOUBLE POINTS
Heat Energy causes water to evaporate, condense, melt, AND _______
freeze
400
The name given to the state of two objects that the same temperature
What is equilibrium
400
For things at the same ________, the thing with ________ molecules has a _______ ______ energy.
temperature, more, higher, thermal
400
Vanessa puts a piece of toast on a plate. The toast is hot from the toaster. When she puts the toast on the plate, the energy of the plate increases. What must be true of the energy of the toast.
Its energy decreases while energy of the plate increases
400
When two substances of different sizes are the same temperature, they have the same thermal energy.
What is false? Thermal energy is the total energy of all particles in a substance.
400
DOUBLE POINTS
In the dumpling article of examples of different substances and the energy required to change their temperatures from 20°C to 100°C what substance takes the least amount of energy to heat up and what takes the most?
sand (least) and water (most)
500
when something stays mostly the same over time
What is stability?
500
When two things are in contact, their _______ collide, and _______ ________ from the ________ moving ________ to the _______ moving ________.
molecules, energy, transfers, faster, molecules, slower, molecules
500
After these two pieces of plastic have been touching for a while, Where is the energy transferring to?
bottom to top
500
If object A has 500 Kj of energy and object B has 300 Kj of energy then when they touch energy will transfer from object B to object A.
What is false. Hot substances transfer to cold substances.
500
What material is the best conductor of heat and why?
copper, wood, plastic, glass
Copper has a high thermal conductivity due to its free electrons, allowing heat to transfer quickly through it.