the ability to move or change something

the energy that an object has because it is moving

the energy that is stored in an object (not moving yet)

a group of atoms joined together in a particular way

a measure of how hot or cold something is; the measure of the average kinetic energy of the molecules

become or make greater in size or amount Example - temperature of a substance increases - it gets hotter; the molecules moves farther and faster

make or become smaller or fewer in size or amount Example - temperature of a substance gets colder; the molecules get closer and move slower

a set of parts that form a complex whole

What happens to the molecules of a substance when the temperature decreases?

The energy of the molecules decreases.

When a candle is blown out, the temperature of the wax decreases in temperature. What happens to the molecules of the wax?

The molecules slow down and lose energy.

When I put cold milk in my glass, the energy of the glass decreases. What happens to the energy of the cold milk? (increase or decrease)

The energy of the cold milk increases while the temperature of the glass decreases. Milk is cold and Glass is warm; Energy transfers hot to cold so the glass gives energy to warm the milk.

When I put a hot burrito on my plate, the energy of the plate increases. What happens to the energy of the burrito?

The energy of the burrito decreases while the energy of the plate increases. (hot to cold)

the total amount of kinetic energy in a substance

What has more thermal energy - a glass of water or a bathtub of water?

The bathtub of water because it has more molecules and therefore more total thermal energy.

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Thermal Energy Part1

Vocabulary Flashcards for Thermal Energy Unit

Term	Definition
energy	the ability to move or change something
kinetic energy	the energy that an object has because it is moving
potential energy	the energy that is stored in an object (not moving yet)
molecule	a group of atoms joined together in a particular way
temperature	a measure of how hot or cold something is; the measure of the average kinetic energy of the molecules
increase	become or make greater in size or amount Example - temperature of a substance increases - it gets hotter; the molecules moves farther and faster
decrease	make or become smaller or fewer in size or amount Example - temperature of a substance gets colder; the molecules get closer and move slower
system	a set of parts that form a complex whole
How does heat transfer?	hot to cold
When heat is ADDED to a substance/sample, the molecules move __________ (faster or slower)?	faster
When heat is REMOVED from a substance/sample, the molecules move __________ (faster or slower)?	slower
What happens to the molecules of a substance when the temperature decreases?	The energy of the molecules decreases.
When a candle is blown out, the temperature of the wax decreases in temperature. What happens to the molecules of the wax?	The molecules slow down and lose energy.
A larger sample with more molecules will take __________ (more or less) time to change temperature than a smaller sample with less molecules.	more
When I put cold milk in my glass, the energy of the glass decreases. What happens to the energy of the cold milk? (increase or decrease)	The energy of the cold milk increases while the temperature of the glass decreases. Milk is cold and Glass is warm; Energy transfers hot to cold so the glass gives energy to warm the milk.
When I put a hot burrito on my plate, the energy of the plate increases. What happens to the energy of the burrito?	The energy of the burrito decreases while the energy of the plate increases. (hot to cold)
thermal energy	the total amount of kinetic energy in a substance
What has more thermal energy - a glass of water or a bathtub of water?	The bathtub of water because it has more molecules and therefore more total thermal energy.

Created by: jbohannon

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