Waves. What is a wave? A wave is a disturbance that carries energy from one place to another What happens to a boat when a wave hits it?

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Presentation transcript:

Waves

What is a wave? A wave is a disturbance that carries energy from one place to another What happens to a boat when a wave hits it?

What carries Waves? Most waves NEED something to travel through Medium- The material that a wave travels through What would a sound wave travel through? What does an earthquake wave travel through?

Waves Waves that NEED a medium to travel through are called MECHANICAL WAVES

The duck scenario What would happen to a duck in the water when a wave moves under it??? Cork in fish tank demo The duck would move up and down Waves do not take a medium with them, they just move through it (the water stays in place after the wave has moved through)

What causes waves? Waves are caused by vibrations Let’s think of some examples where vibrations might cause waves to occur…

Types of Waves Waves are put into groups based on how they move There are 3 basic wave categories

What is a Transverse Waves Waves where the particles in the medium move perpendicular to the wave motion (the wave travels across, but the medium just moves up and down) Slinky demonstration

What is a Longitudinal Wave? The particles in the medium move parallel to the direction that the wave is traveling Slink Demonstration

What is a Surface Wave? Are a combination of transverse and longitudinal waves Occur at the surface of two different mediums (air and water) Up and down motion combines with the back and forth motion= circular motion