1. What is Electromagnetic wave? 2. How does EM waves propagates? 3. What are the different types of EM waves? 4. How do they differ from each other? 5. Do they have the same wavelenghth and frequency? How about energy? Acitivity 2 Objective: 1.Describe Electromagnetic wave, and 2. Enumerate the types of EM waves
Answer (1)
Answer:Understanding Electromagnetic Waves Here's a breakdown of electromagnetic waves: 1. What is an Electromagnetic Wave?An electromagnetic wave (EM wave) is a disturbance that travels through space by the interplay of oscillating electric and magnetic fields. These fields are perpendicular to each other and to the direction of wave propagation. 2. How do EM waves propagate? EM waves propagate by a self-sustaining process:Electric Field: A changing magnetic field creates an electric field.Magnetic Field: A changing electric field creates a magnetic field.This continuous cycle of creation and interaction between electric and magnetic fields allows the wave to travel through space, even in a vacuum. 3. What are the different types of EM waves?The electromagnetic spectrum encompasses a wide range of EM waves, categorized by their frequency and wavelength:Radio Waves: Longest wavelength, lowest frequency. Used for communication, broadcasting, and radar.Microwaves: Shorter wavelength than radio waves. Used for cooking, communication, and satellite transmission.Infrared Radiation: Used for heat sensing, thermal imaging, and remote controls.Visible Light: The only part of the EM spectrum that humans can see. Includes all the colors of the rainbow.Ultraviolet (UV) Radiation: Can cause sunburns and skin cancer. Used in sterilization and medical imaging.X-rays: Used in medical imaging and security screening.Gamma Rays: Highest frequency, shortest wavelength. Used in medical treatment and industrial applications. 4. How do they differ from each other?EM waves differ primarily in their frequency and wavelength. These two properties are inversely proportional:Higher frequency: Shorter wavelengthLower frequency: Longer wavelength 5. Do they have the same wavelength and frequency? How about energy?No, different types of EM waves have different wavelengths and frequencies. This also means they have different energies.Higher frequency: Higher energyLower frequency: Lower energy Activity 2: 1. Describe Electromagnetic Waves:Electromagnetic waves are disturbances that travel through space, carrying energy. They are formed by the interaction of oscillating electric and magnetic fields, which are perpendicular to each other and to the direction of wave propagation. 2. Enumerate the types of EM waves:Radio WavesMicrowavesInfrared RadiationVisible LightUltraviolet (UV) RadiationX-raysGamma Rays Remember, these waves are all part of the same spectrum, but they differ in their frequency, wavelength, and energy.
