pg87 DO:I will be able to recognize the different types of waves, identify and define the parts of waves, as well as and explain their unique characteristics. EQ: What is the difference in wave types? Explain the similarities and differences between waves.

K What I know about Waves W What I want to know about waves L What I learned about waves Read pages 509 to 514 in the textbook as an introduction to waves.

Question:  With your table hypothesize what we are going to learn about during our unit on Waves.  5min

Waves A wave is any disturbance that transfers energy through matter or space  If a pebble is thrown into water, you would see waves moving outward from the place where the pebble entered the water. The energy travels through the wave. 5

All waves are disturbances that transmit energy.  Energy from the pebble moves in a right angle from the up and down motion of the water as the wave passes  This interruption of the quiet, calm water is called a disturbance. 6

Medium  The material through which waves can travel is called a medium  Energy is also carried from the source by vibrations  A vibrating particle transfers its energy to a nearby particle and so on. * 7

MECHANICAL Waves  A medium can be gas, a liquid, or a solid  A wave that needs a medium to travel is called a mechanical wave.  Water is the medium for ocean waves 8

ELECTROMAGNETIC Waves  Not all waves need a medium to transfer energy  Visible light, microwaves, ultraviolet light, X-rays, infrared waves, and gamma rays can all travel through empty space 9

Mechanical Wave Classification Waves are classified according to the way they move and the medium they use.  A wave that transfers energy in a direction that is perpendicular (at a right angle) to its medium is called a transverse wave 10

CLOSURE:  What stuck with you? -On a post-it note please write what stuck with you from our lesson on waves. -Hypothesize what we are going to learn next.