What is thermal energy?

• Energy that comes from sound

• Energy from the motion of tiny particles (molecules) in an object

• Energy that only exists in cold objectsEnergy stored in food

• Energy stored in food

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3

NGSS.MS-PS3-4

What happens when two objects with different temperatures touch each other?

• Heat moves from the colder object to the warmer object

• Heat moves in both directions equally

• Heat does not move at all

• Heat moves from the warmer object to the colder object

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3

NGSS.MS-PS3-4

What is thermal equilibrium?

• When one object is hotter than the other

• When two objects are the same size

• When two objects stop transferring heat because they are the same temperature

• When heat keeps moving back and forth forever

Tags

NGSS.MS-PS3-5

What does the average temperature of an object measure?

• How fast the molecules in the object are moving

• The number of molecules in the object

• How heavy the object is

• How much thermal energy the object has

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What happens to molecules in an object when its temperature increases?

• The molecules move faster and spread out

• The molecules move slower and come closer together

• The molecules stop moving

• The number of molecules increases

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

How does kinetic energy relate to temperature?

• The less kinetic energy the molecules have, the higher the temperature

• Temperature and kinetic energy are not related

• The more kinetic energy the molecules have, the higher the temperature

• Kinetic energy only happens in solids

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

What happens when molecules collide with each other?

• They stop moving completely

• They grow larger

• They transfer energy to each other

• They disappear

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

Which is an example of conduction?

• Warm air rising in a house

• The Sun warming your skin

• Heat moving through waves in space

• Your hand getting warm from holding a hot cup

Tags

NGSS.MS-PS3-3

Why does a cold drink warm up when left in a warm room?

• The cold drink transfers heat to the room

• The drink absorbs cold from the air

• Heat stays trapped in the drink

• Heat from the room transfers to the cold drink

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What happens to the thermal energy of an object when its molecules move faster?

• The thermal energy decreases

• The thermal energy increases

• The thermal energy stays the same

• The thermal energy disappears

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4