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🌡️ The Ocean and Climate

Discover how the giant ocean soaks up heat, makes clouds and rain, and helps steer the whole planet's weather.

2
lessons
~15 min
to learn
🔬 Science
subject
Ages 6–12
level
Start the course →

What you’ll learn

  1. The Ocean's Big JobExplain how the ocean stores heat and supplies water for clouds and rain through the water cycle.Water holds heat well and warms and cools slowly, so the ocean stores the Sun's warmth and keeps the planet's temperature steady. The Sun evaporates sea water into vapour, which forms clouds and rain, driving the water cycle that keeps rivers flowing.
  2. Steering the WeatherDescribe how ocean currents move heat and how the ocean shapes weather and climate.Ocean currents carry warmth from the tropics toward the poles, keeping many places milder. Warm surface water fuels the biggest storms by evaporating and rising. Today the ocean also soaks up much of the extra heat and carbon dioxide people add, slowing the planet's warming while warming the sea itself.

Questions this course answers

Why does the ocean help keep the planet's temperature steady?

Water holds heat well and warms and cools slowly, so the ocean stores the Sun's warmth and keeps the planet's temperature steadier.

Where does most of the water in clouds and rain come from?

The Sun evaporates water from the ocean into vapour, which rises and forms the clouds that later fall as rain.

What is the very first stage of the water cycle at the ocean?

In the water cycle, the Sun heats the ocean and evaporates water into vapour, which is where the loop begins.

What do warm ocean currents do?

Warm currents move heat from the sunny tropics toward the cooler poles, spreading the Sun's warmth around the globe.

Why do the biggest storms form over warm tropical seas?

Warm sea water evaporates quickly and the rising warm, wet air gives storms their energy, so warm tropical seas power the fiercest storms.

How is the ocean helping with climate change today?

The ocean absorbs much of the extra heat and carbon dioxide from burning fuels, which slows how fast the planet warms, though the sea itself warms as a result.

Grounded in trusted sources

  • NOAA
  • National Geographic Kids
  • NASA Climate Kids
  • Britannica Kids

Every Wunder lesson is built from real, reputable sources — never invented.

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