wave

In the simplest terms, a wave is a repeating pattern of movement. Waves are made of energy and can be seen, heard, or felt. For example, you can see a wave if you toss a pebble into a lake or pond. The pebble creates ripples in the water that spread outwards in circles. You can also hear waves. Concerts or festivals sometimes use speakers to create waves of sound that can be heard by those around them. Lastly, you can feel waves. For example, if someone stands up and starts jumping up and down a wave of energy moves through the floor and you can feel it.