(a) How are electro-magnetic waves produced ? However, higher frequency radiation, such as gamma rays and X-rays, are extremely harmful at certain exposure levels. Overview. Lower frequency electromagnetic waves, such as radio waves, are generally accepted to not be harmful. Wavelength. Electromagnetic waves travel with a constant velocity of 3 x 108 ms-1 in vacuum. Waves with a higher frequency have a longer wavelength. Waves with a higher frequency have a shorter wavelength. Electromagnetic waves are transverse waves. This is true for waves on guitar strings, for water waves, and for sound waves, where amplitude is proportional to pressure. In other words, EM waves are composed of oscillating magnetic and electric fields. 3- E.M wave are transverse in nature. Electromagnetic waves are not deflected by electric or magnetic field. 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. The frequency of an electromagnetic wave is a factor in whether it is relatively harmless or dangerous to living organisms. 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. A wave’s energy is proportional to its amplitude squared (E 2 or B 2). Electromagnetic waves may be polarized. 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. Characteristics of Electromagnetic Waves. Electromagnetic waves can show interference or diffraction. Wavelength (λ) is the distance between successive crests of a wave, especially points in an electromagnetic wave or sound wave. 1- they are used in radio and TV communication system. Definition: Electromagnetic waves or EM waves are waves that are created as a result of vibrations between an electric field and a magnetic field. */ Light waves across the electromagnetic spectrum behave in similar ways. They travel only through matter. Which are characteristics of electromagnetic waves? Check all that apply. 2- E.M waves do not require any material medium for their propagation. 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. In electromagnetic waves, the amplitude is the maximum field strength of … Lesson Content. In this lesson, students will learn the basic characteristics of electromagnetic waves. Description: Electromagnetic waves are formed when an electric field comes in contact with a magnetic field. Depict an electromagnetic wave propagating in Z-direction with its magnetic field oscillating along X-direction. Inquire: Electromagnetic Waves. They all move at the same speed. Electromagnetic Spectrum is the classification of these waves according to their frequency. It can be simply defined as the distance of … 1- Electromagnetic waves are produced by accelerating or oscillating charge. Uses of Radio waves . (b) Write two characteristics of electro-magnetic waves. Electromagnetic waves and their characteristics is explained briefly in the points mentioned below. In particular, students will define the terms They can travel through space. Of an electromagnetic wave propagating in Z-direction with its magnetic field and electric fields especially points in electromagnetic. 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