ENERGY Ability to do work

WAVE Disturbance that

Transfers energy from place to place

Medium – The material through which a wave travels

Mechanical Wave – waves that require a medium through which to travel.

Transverse Waves-waves that move the medium at right angles to the direction in which the waves travel.

Longitudinal Wave – move the particles of the medium parallel to the direction that the waves are traveling.

CREST – The Highest part of a wave

TROUGH- The lowest part of a wave

Rarefaction- The parts where the coils spread out, or rarefied

Compression-The parts where the coils are close together

Vibration – repeated back and forth up and down motion

Seismograph-Records the ground movements caused by seismic waves as they move through Earth.

Frequency-A wave is the number of complete waves that pass a given point in a certain amount of time

Hertz (Hz) – Units of measurement for frequency

Node-Destructive interference causes two waves to combine to produce an amplitude of zero.

Antinode-The crests and troughs of the standing wave.

Primary waves-longitudinal seismic waves

Secondary waves-transverse seismic waves

Reflection-When an object or wave hits a surface through which it cannot pass, it bounces back.

Angle of Reflection – Is the angle between the reflected waved and the imaginary line.

Seismic Wave – Waves produced by earthquakes

Surface Waves-combination of transverse and longitudinal waves.

Destructive Interference-When the amplitude of two waves combine with each other producing a smaller amplitude.

Constructive Interference-Whenever two waves combine to make a wave with a larger amplitude.

Diffraction-The bending of waves around the edge of a barrier is known as a diffraction.

Angle of Incidents-Between the incoming wave and the imaginary perpendicular line.

Wavelength-The distance between two corresponding parts of a wave.

Standing Wave-wave that appears to be standing still.

Tsunami-Earthquakes that occur under water can cause huge surface waves on the ocean floor.

Amplitude – The maximum distance the medium carrying the wave moves away from its rest position.

Interference-The effect that occurs when two or more waves meet.