The lesson, as always: Science is the coolest.
These water tricks are all just a little bit like magic. But how do they actually work?
The Water Illusion
What you need:
Glass, water, and printed arrows.
How to:
Simply pour the water in the glass in front of the arrows and watch it magically flip.
Science:
Light refracts or bends when it passes from one material to another. It also acts like a magnifying glass, bending the light towards the center.
The Pepper Trick
What you need:
Water, pepper, bowl, and soap.
How to:
Fill the bowl with water and sprinkle the pepper on top. Notice when you touch it with your finger nothing happens. Put some soap on your finger, touch it again, and watch the pepper spread like magic.
Science:
Due to surface tension, the pepper floats on top. The soap interferes with the hydrogen bond between water molecules, breaking the surface tension. Naturally, water molecules are strongly attracted to each other. So when the surface tension breaks, the water spreads out. It's attracted to the outside water molecules, making it spread out and taking the pepper particles with it.
Water And Jack
What you need:
Water, 2 shot glasses, whiskey and a card.
How to:
Fill one glass with water and one with the alcohol. Place the card on the glass filled with water. Flip it carefully using the card to prevent it from spilling. Place it on top of the glass with alcohol and move the card slightly to create a small gap. Wait about 10 min. and watch the water switch places with the alcohol.
Science:
Liquids have different densities. The Jack simply floats up because it’s lighter than the water.
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