Lower frequency electromagnetic waves, such as radio waves, are generally accepted to not be harmful. Description: Electromagnetic waves are formed when an electric field comes in contact with a magnetic field. Uses of Radio waves . Electromagnetic waves travel with a constant velocity of 3 x 108 ms-1 in vacuum. 1- Electromagnetic waves are produced by accelerating or oscillating charge. It can be simply defined as the distance of … (b) Write two characteristics of electro-magnetic waves. Electromagnetic waves may be polarized. In particular, students will define the terms However, higher frequency radiation, such as gamma rays and X-rays, are extremely harmful at certain exposure levels. In other words, EM waves are composed of oscillating magnetic and electric fields. (a) How are electro-magnetic waves produced ? This is true for waves on guitar strings, for water waves, and for sound waves, where amplitude is proportional to pressure. Waves with a higher frequency have a longer wavelength. In this lesson, students will learn the basic characteristics of electromagnetic waves. Definition: Electromagnetic waves or EM waves are waves that are created as a result of vibrations between an electric field and a magnetic field. Overview. They can travel through space. Waves with a higher frequency have a shorter wavelength. They all move at the same speed. Characteristics of Electromagnetic Waves. Electromagnetic waves can show interference or diffraction. */ Light waves across the electromagnetic spectrum behave in similar ways. They are hence known as ‘electromagnetic’ waves. Electromagnetic spectrum, the entire distribution of electromagnetic radiation according to frequency or wavelength.Although all electromagnetic waves travel at the speed of light in a vacuum, they do so at a wide range of frequencies, wavelengths, and photon energies. Electromagnetic Spectrum is the classification of these waves according to their frequency. In electromagnetic waves, the amplitude is the maximum field strength of … We know that electromagnetic waves include different types of waves like radio waves, microwaves, Infrared rays, Visible rays, Ultraviolet rays, X-rays, and gamma rays. The frequency of an electromagnetic wave is a factor in whether it is relatively harmless or dangerous to living organisms. Depict an electromagnetic wave propagating in Z-direction with its magnetic field oscillating along X-direction. Wavelength (λ) is the distance between successive crests of a wave, especially points in an electromagnetic wave or sound wave. Lesson Content. When a light wave encounters an object, they are either transmitted, reflected, absorbed, refracted, polarized, diffracted, or scattered depending on the composition of the object and the wavelength of the light. Check all that apply. They travel only through matter. A wave’s energy is proportional to its amplitude squared (E 2 or B 2). 1- they are used in radio and TV communication system. 2- E.M waves do not require any material medium for their propagation. Which are characteristics of electromagnetic waves? Electromagnetic waves and their characteristics is explained briefly in the points mentioned below. Wavelength. The electromagnetic spectrum describes a wide range of different electromagnetic waves.Also called EM waves, these are a special type of wave that can travel without a medium. 3- E.M wave are transverse in nature. Electromagnetic waves are transverse waves. Inquire: Electromagnetic Waves. Electromagnetic waves are not deflected by electric or magnetic field. Students will learn the basic characteristics of electromagnetic waves 2 ) or sound.., higher frequency have a shorter wavelength lower frequency electromagnetic waves are by... 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