Class Response: Waves

Three facts I have learned in class:

1.) A transverse wave is a wave that move the medium at the right direction in which the waves travel.

2.) A longitudinal wave is a wave that moves the medium parallel to the direction in which the wave travels

3.) The high point of a wave is called a crest, the low part is called a trough.

4.) A medium is the material through which a wave can travel through.

My opinion on the subject of waves is that it is interesting to learn about. I didn't know that a wave that needs a medium to travel through is called a mechanical wave. Examples of a medium could be water, air or any type of solids like a rope. I didn't know that light from the sun can carry energy through an empty space. The opposite of a mechanical wave is a electromagnetic wave which doesn't need a medium to travel through. Below is one website that includes the definition and plenty examples of waves, crest, and troughs.

http://www.bbc.co.uk/scotland/education/bitesize/standard/physics/waves/wave_definitions_rev3.shtml