The Nature of Waves. List the different types of waves present in the events described below:.
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Imagine that your family has just returned from a day at the beach. You had fun playing in the ocean in the hot sun. You put some cold pizza in the microwave for dinner and turn on the radio. Just then the phone rings. It is your friend calling about homework.
A Wave is any disturbance that transmits energy through matter-or-empty space.
Example: a leaf on a pond will bob up and down, but not move its position if waves are created. The waves move, but the water and leaf remain in the same spot!!
Some waves do not need a medium to travel through. These waves are called electromagnetic waves.
-Light rays from the sun reflecting off the moon allow you to see the moon.
-Light is reflected off of snow.
-A reflected sound wave is called an echo.
2.Refraction = the bending of a wave when it passes through one medium to another at an angle.
Example: A pencil in a glass of water. The pencil seems bent because the light waves are moving from air to water.
- Can be destructive (when the crest of one wave and the trough of another overlaps). If they have the same amplitude or height they cancel each other out.