Ocean waves: Many things can create waves on the ocean some of those things are as wind, earthquakes, the current, etc. Also the sun and moon’s gravitational pull controls the tide levels. Tide makes the water go up and down, whereas the current in the water makes the water move horizontally.

          Heat wave: A heat wave is a basically a really intense hot spell, that would usually not come during the year. In Europe, 2003, 14,802 people died in just one heat wave. In UK, during the same year 2045 people died. Also during the same year in Portugal 2099 people died just because of the one heat wave.

          Greeting waves: People wave to each other in greeting. There are many different types of greeting waves. They usually correspond to the culture the people are in. Ancient Indians raised their right hand like you do when you take an oath and said something that sounded like “hou”.

          Sound waves: Sound waves are very similar to light waves. Sound waves have a crest, trough, etc. Just like light waves. Sound waves travel outward from the source, just like when you throw a stone into a body of flat water.

           Seismic waves: A seismic wave is basically an earthquake. Just like sound waves the earthquake travels away from the source. Each ‘ripple’ is an aftershock. If you were standing right where the earthquake started then you might