Review for Semester Test

Front

What is convection?

Back

Convection is the transfer of heat through the movement of fluids (liquids or gases). In convection, warmer, less dense fluid rises while cooler, denser fluid sinks.

Front

What is a mixture?

Back

A mixture is a substance that contains two or more different atoms or compounds that are not chemically bonded together.

Front

What happens to the energy of particles in a substance when it is heated?

Back

When a substance is heated, the energy of its particles increases, causing them to move apart and the substance to expand.

Front

What is the purpose of foam padding in recording studios?

Back

Foam padding is used to absorb loud sounds, reducing echo and improving sound quality.

Front

What happens to a liquid when it is heated?

Back

When a liquid is heated, it expands due to the increased movement of its particles.

Front

What is radiation?

Back

Radiation is the transfer of energy through electromagnetic waves, such as light or heat, without the need for a medium.

Front

What is evaporation?

Back

Evaporation is the process by which liquid turns into vapor, usually occurring at the surface of the liquid.

Front

What is air pressure?

Back

Air pressure is the force exerted by the weight of air molecules on a surface. It decreases with altitude.

Front

What is a compound?

Back

A compound is a substance formed when two or more different atoms are chemically bonded together.

Front

What is sound reflection?

Back

Sound reflection occurs when sound waves bounce off a surface, which can create echoes.