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Submitted by:5 Camille Joyce Bautista

6 Rica Rosario Borja7 Iannah Blanche Braga

8 Ma. Cecillia BukirinIV- St. Angela

What is a WAVE?A disturbance that travels through space and time, usually accompanied by the transfer of energy.

Crest and Trough:CREST – maximum value or upward displacement within a cycle.

TROUGH – minimum or lowest point in a cycle.

Crests and Troughs

Amplitude:Magnitude of changeOscillation- repetitive variationMeasure of energy transferred

Equilibrium PositionAlso known as rest position.

WavelengthDistance between one point on a wave to

the identical point in the next wave in the series.

(ex. Crest to crest, trough to trough) Represented by greek symbol λ (lamda)

Characteristics of a wavelength:FREQUENCY- how often the particles of the

medium vibrate when a wave passes through the medium

- temporal frequency - Hertz (Hz) or cycles per secondPERIOD- the time needed for each particle to

complete one full wave movement.

Types of waves:LONGITUDINAL WAVE- parallel to the

direction of wave propagation.

- move backward and forward along the

direction in which the wave is travelling.

TRANSVERSE WAVE- perpendicular to the direction of wave

propagation. - propagating from left

to right. - the particles do not

move along with the wave -oscillate up and

down

Longitudinal and Transverse Waves

Classifications of wave:MECHANICAL- also known as material wave. - needs a medium to travel. - ex. ocean waves, and sound waves - requires initial energy input. Types: Transverse, Longitudinal, and Surface

waves.

ELECTROMAGNETIC- require no medium but can travel through one.

-can travel not only through air and solid materials, but also through the vacuum of space.

Mechanical and Electromagnetic Waves

Electromagnetic RadiationOften abbreviated as E-M radiation or EMRForm of energy that exhibits wave-like behavior as

it travels through space.Has both electric and magnetic field components.Classified according to the frequency of its wave.Carries energy and momentum that may be

imparted to matter with which it interacts.Increasing frequency and decreasing wavelength.Consists of radio waves, micro waves, infrared

radiation, visible light, ultraviolet radiation, X-rays, and gamma rays.

QUIZ:1. It is a disturbance that travels through

space and time, usually accompanied by the transfer of energy.

2. It is also known as material wave.3. It is a classification of waves that require

no medium but can travel through one.4. It is a type of wave that is perpendicular

to the direction of wave propagation.5. It is known as the rest position.

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