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Lesson ID: 12692
Can water climb up? Discover how capillary action helps water move against gravity in this fun, hands-on science lesson!
Jump Up, Gravity!
Try this: jump as high as you can!
That’s because of a powerful force called gravity.
Gravity is what keeps your feet on the earth instead of floating away into space!
It pulls everything—people, balls, trees, and even water—down toward the ground.
But here’s a twist: some things can seem to go against gravity. Imagine water moving up instead of down!
Scientists call this amazing trick capillary action.
Sticky Water Magic
Water is made up of teeny-tiny parts called molecules.
These molecules like to stick together—almost like best friends holding hands. This sticking power is called cohesion.
Water also likes to stick to other things, like glass, paper, or your skin. That’s called adhesion.
When cohesion and adhesion work together, water can climb!
It can travel up a narrow space, such as a tiny tube, a paper towel, or even the stem of a plant. That’s capillary action—water’s secret climbing power.
You can see it in action when:
A flower’s stem drinks water from a vase.
Water travels up from the roots to the top of a tall tree.
A paper towel soaks up a spill.
It’s like the water is using invisible ladders to climb upward!
Dr. Z’s Experiment Time
Watch as Dr. Z shows you how to see capillary action for yourself.
You’ll see water travel up a piece of paper—like it’s breaking the rules of gravity!
Remember: the tiny holes in the paper grab onto water molecules, and the molecules pull each other up. That’s capillary action in action!
Why It Matters
Capillary action is everywhere around you!
Plants couldn’t grow without it, towels wouldn’t dry you off, and colorful markers wouldn’t spread on paper.
It helps water move through the world, keeping plants alive and helping people every day.
Ready to Try It?
Now that you know how water can travel upward—even against gravity—it’s time to see it for yourself.
In the Got It? section, you’ll explore an experiment that lets you see water’s magic climbing power right before your eyes!
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