🧪
Experiment
DIY Thermocline Jar
See how warm and cold water layer — just like in a real lake or ocean.
20 min Easy
📋 What You'll Need
- •A large clear jar or tall glass
- •Hot water with red food coloring
- •Cold water with blue food coloring
- •A stiff piece of card or plastic
👣 Step by Step
🔍 What to Observe
- •Did the colors stay separate or mix?
- •Where did the boundary between them sit?
- •What do you think a 'thermocline' is?
💡 Tips & Safety
- •A thermocline is the boundary where warm water sits above cold water.
- •Fish often gather right at the thermocline because food collects there.
- •Be careful with the hot water — ask an adult for help.