Thermal Energy Transfer Quiz

What is the primary cause of thermal expansion in a solid?

• The particles in the solid get larger.

• The particles in the solid vibrate more vigorously.

• The number of particles in the solid increases.

• The particles in the solid lose energy.

Which method of thermal energy transfer does not require particles?

• Conduction

• Convection

• Radiation

• Evaporation

As the temperature of a solid increases, what happens to its internal energy?

• It decreases.

• It stays the same.

• It increases.

• It converts to potential energy.

Why does the air at the top of a heated room become warmest?

• Hot air is denser and sinks.

• Warm air is less dense and rises due to convection.

• The ceiling radiates heat downwards.

• Heat conducts best through the air at the top.

Which statement best explains why a puddle of water at $22^{\circ}C$ can evaporate even though the boiling point of water is $100^{\circ}C$?

• Evaporation only happens at the boiling point.

• Evaporation can occur at any temperature below the boiling point.

• Air pressure forces the water to evaporate.

• The water must be boiling to turn into a gas.

The handle of a metal spoon left in a hot cup of tea gets hot. Which process is mainly responsible for heating the handle?

• Convection

• Radiation

• Evaporation

• Conduction

Which type of radiation is primarily responsible for transferring thermal energy?

• Visible light

• Ultraviolet

• Infrared

• X-rays

Why does your hand feel cold when water at the same temperature as your skin ($29^{\circ}C$) is put on it?

• The water conducts cold into your hand.

• The water is a better insulator than air.

• The water evaporates, taking thermal energy from your skin.

• Your skin temperature immediately drops below $29^{\circ}C$.

In an experiment to compare the speed of thermal energy transfer in different metal rods, which of the following must be kept constant for a fair comparison?

• The material of each rod.

• The length and thickness of the rods.

• The time it takes for the wax to melt.

• The distance the heat travels.

Thermal radiation can travel through which of the following?

• Wood and iron only.

• Copper and iron only.

• Air, glass, and a vacuum.

• Only through solids.