Understanding Heat Energy and Its Effects on Matter

What are the two main types of energy discussed in the video?

• Nuclear and chemical energy

• Potential and kinetic energy

• Thermal and electrical energy

• Mechanical and sound energy

How does heat energy affect the movement of molecules in a liquid?

• Molecules move faster and spread out

• Molecules move slower and come closer

• Molecules stop moving

• Molecules move in a circular motion

In the first experiment, what causes the food coloring to rise back to the top?

• The density of the food coloring

• The hot water at the bottom

• The marbles at the bottom

• The cold water at the top

What is the process called when warm air rises and cool air sinks?

• Conduction

• Evaporation

• Convection

• Radiation

Why is the floor cooler than the ceiling in a room?

• Because the ceiling is closer to the sun

• Because the floor absorbs more heat

• Because cool air rises

• Because warm air rises

What happens to the balloon when it is submerged in hot water?

• It shrinks

• It expands

• It changes color

• It stays the same size

What is the temperature of the water when the balloon is submerged in cold water?

• 79 degrees

• 125 degrees

• 37 degrees

• 73 degrees

What does the experiment with the balloon demonstrate about heat energy?

• Heat energy changes color

• Heat energy has no effect

• Heat energy causes contraction

• Heat energy causes expansion

What happens to the balloon when it is placed back in cold water after being in hot water?

• It bursts

• It shrinks

• It stays the same size

• It expands further

What is the key takeaway about the effect of heat energy on matter?

• Heat energy causes matter to contract

• Heat energy only affects gases

• Heat energy causes matter to expand

• Heat energy has no effect on matter