Thermal Energy

Which statement describes the physical properties of liquid water?

• Water always maintains its shape

• Water does not maintain its volume

• Water maintains its shape but not its volume

• Water maintains it volume but not its shape

A spoon is left in a cup of hot tea. Which statement explains the transfer of thermal energy?

• The water transfers its thermal energy to the spoon by convection.

• The water transfers its thermal energy to the spoon by conduction.

• The spoon transfers its thermal energy to the water by conduction.

• The radiant energy of the water transfers its thermal energy to the spoon.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Pieces of ice are added to a warm drink. Which best explains the transfer of energy happening in this example.

• Thermal energy is moving from the warm liquid to the cold ice

• Thermal energy is moving from the cold ice to the warm liquid

• There is no transfer of energy - the objects are in equilibrium

• There is no transfer of energy due to the temperature difference.

Tags

NGSS.MS-PS1-4

If a liquid is cooled so that it changes to a solid, what happens to the movement of the molecules?

• The molecules speed up and move apart

• The molecules move around each other

• The molecules slow down and begin to vibrate

• The molecules stop moving.

Tags

NGSS.MS-PS1-4

Which situation describes thermal energy transfer by convection?

• A pan is set on a hot stove and the pan begins to get warmer

• Water in a pan is heated as the hot water at the bottom rises to the top and the cooler water sinks to the bottom.

• Energy from a microwave heats a cup of water.

• A student burns her finger when she touches a hot pan.

Which selection shows the energy transformation for a car travelling down the road.

• Solar energy is transformed into heat energy as the car is pushed along by warm air currents.

• Chemical energy of the gasoline is transformed into mechanical energy of the engine that is transformed into kinetic energy of the movement of the car.

• Chemical energy of the gasoline is changed into thermal energy and the car is moved along by the warm air coming out of the tailpipe.

• Kinetic energy is transformed into thermal energy as the car moves down the road.

Tags

NGSS.MS-PS3-5

What is heat?

• Total kinetic and potential energy of the particles of a substance

• The measurement of the thermal energy of a substance.

• The transfer of thermal energy from one object to another.

• The movement of molecules slowing down.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3

NGSS.MS-PS3-4

In a gas, the particles

• Move slowing and only vibrate in place.

• Move around each other but stay fairly close to each other.

• Do not move

• Move very fast and apart from each other.

Tags

NGSS.MS-PS1-4

How are heat and temperature related to each other?

• Heat is the transfer of thermal energy and temperature is the measurement of thermal energy.

• Heat is thermal energy and temperature is measuring heat.

• Heat measures the thermal energy of a substance by taking its temperature.

• Temperature measures how much heat is in a substance.

Tags

NGSS.MS-PS3-3

NGSS.MS-PS3-4

When you increase the thermal energy in an object, what happens to the particles that make up the substance?

• The motion of the particles slow down

• The motion of the particles speed up

• The particles change into a new substance

• The particles change their mass

Tags

NGSS.MS-PS1-4