Exploring Waves: Characteristics and Properties
Dive into the world of waves with a focus on sound and electromagnetic radiation. Understand the nature of mechanical and electromagnetic waves, explore concepts like amplitude and wavelength, and learn about wave types such as transverse waves. Discover the components of waves and how they are influenced by changes in pitch and energy.
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Presentation Transcript
Waves Vocabulary 3.1 You will need 11 index cards
Standards S8P4. Students will explore the wave nature of sound and electromagnetic radiation. A. Identify the characteristics of electromagnetic and mechanical waves. F. Diagram the parts of the wave and explain how the parts are affected by changes in amplitude and pitch.
Wave A disturbance that transfers energy from place to place. http://www.discovertsunamis.org/multimedia /waveform_anatomy.swf
Mechanical Wave Mechanical waves are waves that require a medium. This means that they have to have some sort of matter to travel through. These waves travel when molecules in the medium collide with each other passing on energy. One example of a mechanical wave is sound. Sound can travel through air, water, or solids, but it can't travel through a vacuum. It needs the medium to help it travel. Other examples include water waves, seismic waves, and waves traveling through a spring. https://www.youtube.com/watch?v=997iDD6Fu0A
Transverse Wave Waves where the disturbance moves perpendicular to the direction of the wave. You can think of the wave moving left to right, while the disturbance moves up and down. Example: a water wave where the water moves up and down as the wave passes through the ocean. Another example is a wave of fans in a stadium (the people move up and down while the wave moves around the stadium). https://www.youtube.com/watch?v=Ka_NNaBT4s0
Crest The crest is the highest point of a transverse wave. The opposite of the crest is the trough.
Trough The trough is the lowest part of a transverse wave. The opposite of the trough is the crest.
Wavelength The wavelength of a wave is the distance between two corresponding points on back- to-back cycles of a wave. For example, between two crests of a wave. https://www.youtube.com/watch?v=8y1MkFZ SwIs
Amplitude The measure of the displacement of the wave from its rest position. The higher the amplitude of a wave, the higher its energy.
Period The period of a wave is the time between wave crests. It is the inverse of the frequency.
Compressional Wave (Longitudinal) They produce compression when traveling through a medium. Example: A Spring https://www.youtube.com/watch?v=7cDAYFT Xq3E
Rarefaction The part of a compressional/longitudinal wave where the particles of the medium are far apart.
Electromagnetic Wave a wave (as a radio wave or wave of light) that travels at the speed of light and consists of a combined electric and magnetic effect. http://www.discovertsunamis.org/multimedia /electromagnetic_spectrum_slider.swf
Summary https://www.youtube.com/watch?v=JppViHtL Nlc Quizlet https://quizlet.com/_2s0ubb
