Unit 5 Energy, Waves, and Heat Transfer

Front

What is energy?

Back

Energy is the ability to do work or cause change. It exists in various forms, such as kinetic, potential, thermal, and more.

Front

What are waves?

Back

Waves are disturbances that transfer energy from one place to another without transferring matter. They can be mechanical (like sound) or electromagnetic (like light).

Front

What is heat transfer?

Back

Heat transfer is the movement of thermal energy from one object or substance to another, occurring through conduction, convection, or radiation.

Front

What is conduction?

Back

Conduction is the transfer of heat through direct contact between materials. It occurs when faster-moving particles collide with slower-moving ones.

Front

What is convection?

Back

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

Front

What is radiation?

Back

Radiation is the transfer of energy through electromagnetic waves. It does not require a medium and can occur in a vacuum.

Front

Which type of wave has the longest wavelength?

Back

Radio waves have the longest wavelength and the lowest frequency in the electromagnetic spectrum.

Front

How does sound travel through different mediums?

Back

Sound travels fastest in solids, slower in liquids, and slowest in gases due to the density and arrangement of particles.

Front

What is the relationship between wavelength and frequency?

Back

Wavelength and frequency are inversely related; as the wavelength increases, the frequency decreases, and vice versa.

Front

What color of light has the longest wavelength?

Back

Red light has the longest wavelength in the visible spectrum.