Home > Our Planet > How Do Ocean Tides Work? How Do Ocean Tides Work? Our Planet 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 100 Million Year Old Dinosaur Discovered In Canadian Oil Field 5 Amazing Finds Beneath the Sands of the Sahara The Bajau Laut have genetically adapted for extended sea dives What Causes The Colors Of The Northern Lights? How Big Is The Atmosphere?