WAVES AND THE ELECTROMAGNETIC SPECTRUM

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Presentation transcript:

WAVES AND THE ELECTROMAGNETIC SPECTRUM UNIT #2 THE ATOM

Background Energy is found in many forms (mechanical, kinetic, potential, etc.) One of the ways that energy travels is electromagnetic radiation Examples of electromagnetic radiation: X-rays, microwaves, radio waves, light Electromagnetic radiation travels in waves

Waves Wavelength (λ) – distance between two successive crests or troughs in a wave Frequency (ν) – number of cycles of a wave that pass a point in one second The speed of all waves is the speed of light (2.998 x 108 meters per second)

Units The unit for wavelength are meters The unit for frequency is 1/s (s-1) This unit is also sometimes referred to as Hertz (Hz)

The Inverse Relation of Wavelength and Frequency Wavelength x frequency = speed of light

Practice The wavelength of a wave is 2.00 meters. Find its frequency. The frequency of a wave is 10,575 Hz. Find its wavelength.

The Electromagnetic Spectrum