Even though they both are at the same temperature, which one has more thermal energy? The tea pot or the tea cup?

• Tea pot

• Tea cup

• Neither. They are the same.

What causes hot and cold water to become the same temperature once they are combined?

• The heat moves from cooler temperature to warmer temperature.

• The energy of the hot water runs out.

• Thermal energy from the hot water is transferred to the cold water.

• Thermal energy causes the water to boil.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

As temperature increases, molecules _____________

• move slower and have more energy

• move slower and have less energy

• move faster and have more energy

• move faster and have less energy

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Thermal energy is the __________ _________ energy of moving particles

• total potential

• average potential

• average kinetic

• total kinetic

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Temperature is the __________ _________ energy of moving particles

• average potential

• average kinetic

• total potential

• total kinetic

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Objects with MORE MOLECULES have______________

• lower potential energy

• lower number of atoms

• higher thermal energy

• higher temperature

A cup of tea (80^oC) is placed on a table in a 20^oC room.  What happens to the thermal energy and the motion of the molecules of the tea when it is left on the table?

• The thermal energy increases and the molecules move faster.
• The thermal energy decreases and molecules move more slowly.
• The thermal energy increases and the molecules move more slowly.

Tags

NGSS.MS-PS1-4

The molecules of a system will transfer energy until the system reaches a stable state known as . . .

• change

• equilibrium

• thermal energy

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

There will always be heat transfer between two objects that are touching if...

• the temperatures are the same in each sample

• there is a difference in temperature between samples

Tags

NGSS.MS-PS1-4

When will heat transfer stop?

• When the molecules reach a state of equilibrium

• When the molecules are moving at the same speed

• When the kinetic energy is equal

• When there is a phase change from liquid to gas

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4