What is Physical Science? Forces and motion Waves Heat and energy Chemistry! Physics!

Waves

A medium is a substance or material which carries the wave What is a wave? A disturbance that travels through a medium from one location to another location A medium is a substance or material which carries the wave

Longitudinal Vibrates parallel to (in the same direction of) wave travel sound waves AKA compressional waves the other end of the medium without the actual movement of matter Animation courtesy of Dr. Dan Russell, Kettering University

Animation courtesy of Dr. Dan Russell, Kettering University

Vibrates perpendicular (at right angles) to the wave travel Transverse Vibrates perpendicular (at right angles) to the wave travel Electromagnetic waves Animation courtesy of Dr. Dan Russell, Kettering University

Water Waves A combination of longitudinal & transverse Animation courtesy of Dr. Dan Russell, Kettering University

Electromagnetic Waves Wave which is capable of transmitting its energy through a vacuum (i.e., empty space)

Mechanical Waves Are NOT capable of transmitting its energy through a vacuum (space) Require a medium in order to transport their energy from one location to another Examples: any type of wave that isn’t electromagnetic

Mechanical Waves Waves traveling through a solid medium can be either transverse waves or longitudinal waves Waves traveling through a fluid (such as a liquid or a gas) are always longitudinal waves

Draw a diagram of a wave. Label the parts.

Definitions Wavelength – distance between two crests or troughs Frequency – the number of waves that pass a point in one second Long wavelengths have low frequencies Short wavelengths have high frequencies Amplitude (wave height) – the distance from the middle of a wave to the crest or trough Crest- top of wave Trough- bottom of wave