Understanding Thermal Energy

What happens to the thermal energy of hot fudge when it touches ice cream?

• It stops moving

• It decreases

• It remains the same

• It increases

What does temperature measure?

• The size of particles

• The speed of particles

• The total energy of particles

• How hot or cold something is

Why does a large container of water have more thermal energy than a small cup at the same temperature?

• Because it is heavier

• Because it has more moving particles

• Because it takes up more space

• Because it is warmer

How does thermal energy transfer between objects?

• It does not transfer

• From warmer to cooler objects

• Randomly

• From cooler to warmer objects

What is thermal equilibrium?

• When an object is at its hottest point

• When objects stop moving

• When two objects reach the same temperature

• When thermal energy stops existing

What happens to hot coffee left in a room over time?

• It turns solid

• It gets hotter

• It stays the same temperature

• It cools down

Why do you feel cold when touching a metal surface?

• Because the metal generates cold

• Because the metal is moving

• Because your hand stops moving

• Because thermal energy flows from your hand to the metal

What happens to the temperature of drinks placed in a refrigerator?

• It increases

• It fluctuates

• It remains the same

• It decreases

Why does an ice cube melt at room temperature?

• Because of the pressure

• Because it's made of water

• Because it absorbs light

• Because thermal energy flows into it

What illustrates that thermal energy moves from hotter to cooler objects?

• Hot coffee cooling down

• A light bulb turning on

• Ice freezing in a freezer

• Boiling water in a pot