Vocabulary
What does 'average' mean?
A number that summarizes a set of data and that can be computed by adding all the numbers in a list, then dividing by the number of numbers in the list.
When a thing gets hotter, it's molecules are moving faster and have more ________ energy.
Kinetic
Is there a limit to how cold things can get?
Yes
Thermal energy is not _____.
Temperature
Conduction is...
The transfer of heat through direct contact.
What does 'energy' mean?
The ability to make things move or change.
The molecules of a system will transfer energy until the system reaches a stable state known as _______ in which all the molecules are mmoving at about the same speed.
Equilibrium
Temperature is determined by ___________ molecule movements.
Average
If something starts with the same average kinetic energy, it doesn't mean they have the same __________.
Thermal energy
Convection is...
What does 'kinetic energy' mean?
The energy that an object had because it is moving.
Things are made of _______.
Molecules
Where have the coldest temperatures on Earth been recorded?
Antarctica
If you put the same-sized ice cube in a cup and a bowl, which one would be colder?
The cup
A metal spoon in a pot of boiling soup is an example of...
Conduction
The total kinetic energy of all molecules that make up a sample.
When a thing gets ________, it moves faster.
Hotter
After something slows down completely, it _________.
Stops moving
If you left a bowl of ramen out for a while, it's now the same temperature as the _______.
Room temperature
The Sun is an example of...
Neither conduction nor convection, but radiation.
What does 'stability' mean?
When something mostly stays the same over time.
Temperature is a measure of the ________ speed of the molecules in a thing.
Average
If none of the molecules in an object were moving, then what would its average be?
Zero
/Is it possible that one object can have a lower average kinetic energy but higher total kinetic energy?
Yes
A pot of water boiling on a hot electric stove is an example of...
Radiation, conduction, and convection.