Ocean Currents & Tides
📋 What it is
Currents are rivers within the sea moving heat worldwide; tides are the ocean’s daily rise and fall.
🗣️ Coach says
The ocean is always moving. CURRENTS are like giant rivers within the sea, driven by wind and by differences in temperature and saltiness — they carry heat around the whole planet. TIDES are the daily rise and fall of the sea, caused mainly by the Moon’s gravity pulling on the water.
🧠 Memory hook
Currents = sea-rivers moving heat worldwide (wind + temp + salt). Tides = daily rise/fall from the Moon’s pull.
😂 Giggle
The submarine captain's favorite letter?
C — because it's full of water!
😲 Whoa!
The Moon’s gravity is strong enough to pull the whole ocean into a bulge — as Earth spins under it, that bulge becomes the tides that rise and fall twice a day.
✅ Quick check: What mainly causes ocean tides?
Say your answer out loud first — then reveal.
The Moon’s gravity pulling on the ocean water (with a smaller pull from the Sun).
Tides are driven chiefly by the Moon’s gravity.
🧪 Try it! (2 minutes)
Watch tide times for a coast for a few days — notice the roughly twice-a-day rhythm from the Moon.