Home > Our Planet > How Do Ocean Tides Work? How Do Ocean Tides Work? Our Planet Star STEM Toys - Smart Toys for Smart Kids Share on Pinterest The moon affects the oceans tides but why doesn’t its gravity also cause tides in lakes or even your cup of coffee?. Join Gabe on PBS show Space Time explains tidal force, gravitational differential and what role the moon actually plays in tides. Share on Pinterest Related Posts 7 Ocean Mysteries – Things We Don’t Know Yet The Greatest Antarctica Discoveries To Date How Deep Is The Ocean 10 Mysterious Extinct Human Species What Is Hidden Under The Greenland Ice Sheet?