Tides

Regular rise and fall of sea levels.

tidal movements tidal changes

Tides are the regular rise and fall of sea levels caused primarily by the gravitational pull of the Moon and, to a lesser extent, the Sun.

/taɪdz/

Tides derive from Old English tīd, meaning 'tide, season'.

Tides are like the ocean breathing, rising and falling because of the moon's pull on Earth's water.

What causes tides? The moon's gravity is the primary cause
When does high tide occur? It varies by location, but generally occurs about 12 hours apart
What is a spring tide? It's an exceptionally high or low tide that happens when the sun, Earth, and moon are aligned

oceanography coastal processes

spring tide neap tide diurnal tide semidiurnal tide

high water low water

ocean sea

event geological process natural cycle natural phenomenon