Heat and Energy test review

What is the difference between kinetic and potential energy?

• Kinetic energy is energy of motion, while potential energy is stored energy based on position.

• Kinetic energy is stored energy, while potential energy is energy of motion.

• Kinetic energy is the energy of an object at rest, while potential energy is the energy of an object in motion.

• Kinetic energy is the energy of an object in a magnetic field, while potential energy is the energy of an object in a gravitational field.

What is convection?

• A method of heat transfer that occurs in fluids (liquids and gases) where warmer areas of a liquid or gas rise and cooler areas sink.

• A process where heat is transferred through direct contact between materials.

• A phenomenon where heat is transferred through electromagnetic waves.

• A technique used to cool down solid objects by placing them in a liquid.

What is an example of a good conductor of heat?

• Wood

• Plastic

• Copper

• Glass

What is a conductor?

• A material that allows heat or electricity to flow through it easily.

• A substance that prevents the flow of heat or electricity.

• A type of insulation used in electrical wiring.

• A material that only conducts heat but not electricity.

What is conduction?

• A method of heat transfer that occurs through direct contact between materials, where heat moves from the hotter object to the cooler one.

• A process where heat is transferred through fluids by the movement of the fluid itself.

• A technique used to insulate materials to prevent heat loss.

• A phenomenon where heat is transferred through electromagnetic waves.

What happens to the particles in a solid when heated?

• The particles remain stationary and do not change.

• The particles vibrate faster and may eventually break free from their fixed positions, potentially turning into a liquid.

• The particles move slower and become more compact.

• The particles expand but stay in their fixed positions.

What is radiation in the context of heat transfer?

• A method of heat transfer that occurs through electromagnetic waves, such as sunlight warming the Earth.

• A process where heat is transferred through direct contact between materials.

• A technique that involves the movement of heat through fluids, such as air or water.

• A form of heat transfer that relies on the conduction of heat through solid materials.

Which states of matter have a definite volume?

• Gases and liquids

• Solids and gases

• Solids and liquids

• Liquids and plasma

What is potential energy?

• The energy of an object in motion.

• The type of energy that is stored in an object due to its position or state, such as a rock at the top of a hill.

• The energy released during a chemical reaction.

• The energy associated with the temperature of an object.

How does heat transfer occur in a fluid?

• Through conduction, where heat is transferred through direct contact.

• Through radiation, where heat is transferred through electromagnetic waves.

• Through convection, where warmer, less dense areas of the fluid rise and cooler, denser areas sink.

• Through evaporation, where heat is absorbed as a liquid turns into vapor.