1. waves
The waves are high.
Light waves travel through space and various kinds of materials.
The brain waves during REM sleep are the same as when awake, and it's the stage when you have dreams.
Her action is still making waves in Japanese society.
While light waves travel most quickly through air, they go slower through water and even slower through glass.
If she hadn't made waves about it, she never would have got her money back.
Additive synthesis involves manually controlling harmonics, and uses only sine waves.
I sit in front of a computer screen all day, so I get pretty heavily bombarded by electro-magnetic waves.
During the 2011 Tohoku earthquake, the height of the tsunami waves reached up to 37.9 meters.
He grimaced as if memories of his bitter past were crashing like waves inside his head.
Last year in the Philippines, earthquakes and tidal waves resulted in the deaths of more than 6000 people.
The observation of gravitational waves will start a new phase in the study of the universe.
Optical radars use light, rather than radio waves as normal radars.
As for the air, there is always some moisture in the atmosphere, but when the amount increases a great deal, it affects the light waves.