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  1. 1 Types of Mechanical Waves. waves that travel within some material called a medium. Waves play an important role in how. we perceive our physical world (e.g., sight and sound). Not all waves are mechanical, (e.g., electromagnetic waves); however, the terminology and concepts w.

  2. Waves: Mechanical and Electromagnetic. What is a wave? Different kinds of waves. What can waves do? Describing waves and their properties. Interference Pictorial and mathematical description. Sound and musical scales. From the source and through the medium Standing waves Resonance Scales The Doppler effect.

  3. Explain the difference between Electromagnetic and Mechanical Waves. Identify examples of each of the waves. Create their own body waves to simulate the different waves. Time Required: 75 minutes. Materials Needed: Teacher computer with internet access. Projector/Smartboard. 1 computer/laptop/iPad per student with internet access.

  4. What are electromagnetic waves? How are they created, and how do they travel? How can we understand and organize their widely varying properties? What is their relationship to electric and magnetic effects? These and other questions will be explored. Misconception Alert: Sound Waves vs. Radio Waves.

  5. 13.4 Plane Electromagnetic Waves. To examine the properties of the electromagnetic waves, let’s consider for simplicity an electromagnetic wave propagating in the +x-direction, with the electric field E pointing in the +y-direction and the magnetic field B in the +z-direction, as shown in Figure 13.4.1 below.

  6. Physicists describe light as something called electromagnetic radiation or electromagnetic wave. The word radiation means ‘energy that is transported from one spot to another without need of direct contact between the two locations’.

  7. Remember that radio waves are especially easy to study as an elec- tromagnetic phenomena because we have the ability to directly create them by moving charges, and detect them as induced currents in an antenna.