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✦ OCEANS UNIVERSE · AGES 6–11 ✦

OCEAN
TEMPERATURE

🌡️ Warm top · ❄️ Cold deep · 🧊 Layers!

📖 200 Topics🆓 FREE⏱️ 5 min read🧠 Quiz included
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SUN WARMS TOP
Surface heats up
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THERMOCLINE
Temp drops fast
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COLD DEEP
Near about 2°C
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MIXING
Layers can stir
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CLIMATE
Heat on the move
🌊 OCEAN TEMPERATURE: COLD AT THE BOTTOM
TOPIC 12 · OCEANS · SUN WARMS TOP · THERMOCLINE · COLD DEEP · MIXING · CLIMATE
PAGE 1 OF 5, A WARM LID ON A COLD SEA
LAYERS
Comic ocean cutaway with warm sunny surface and icy cold deep water below
THE OCEAN IS NOT THE SAME TEMPERATURE EVERYWHERE
Dip your toes in a sunny bay and the water can feel warm. Dive far below and it gets chilly fast. The ocean is stacked in temperature layers. The Sun warms the top. Deeper water stays cold for most of the year. That layering shapes where heat and nutrients move, and it helps drive ocean life and climate.
⚡ DID YOU KNOW?
Most of the ocean's volume is deep and cold. The warm surface is only a thin lid on a huge chilly world.
COLD!
TOP
Comic bright sun warming the ocean surface layer
☀️ Sunlight heats the upper ocean first, especially in summer and near the equator.
🏊 That is why swimming near the surface often feels warmer than diving deeper.
BOTTOM
Comic dark cold deep ocean with icy blue water
🧊 Deep water sits far from the Sun's heat and stays cold almost all year.
📉 Temperature usually falls as you go down, until you reach that chilly deep layer.
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