Everyday Science: What Happens When...?

Have you ever wondered why bread rises in the oven, why bubbles are round, or why your hair stands on end when you rub a balloon against it? Science isn’t just something confined to labs and textbooks — it’s happening all around us, every day! From the kitchen to the bathroom mirror, from your backyard to the night sky, simple scientific principles explain much of what we see and do. In this quiz, we dive into everyday situations and reveal the fascinating science behind them. Whether it’s chemistry at play in cooking, physics in motion, or biology in action, you’ll gain fun facts and insights to impress your friends. Get ready to look at the world with new curiosity — and maybe next time someone asks “Why does that happen?”, you’ll have the answer!
No. 1 /10
What happens when you heat water to 100°C at sea level?

It boils and turns into steam
It freezes
It turns into ice vapor
It glows
No. 2 /10
Why does your hair stand up when you rub a balloon on it?

Static electricity builds up
Heat makes it rise
Gravity decreases
Hair cells grow faster
No. 3 /10
What makes bread rise in the oven?

Carbon dioxide from yeast
Water turning to vapor
Fat melting
Sugar crystallizing
No. 4 /10
Why are soap bubbles round?

Surface tension pulls evenly
Gravity flattens them
Air is heavier inside
They spin as they form
No. 5 /10
Why do ice cubes float in water?

Ice is less dense than liquid water
Ice traps air bubbles
Water pushes ice upward
Cold repels ice
No. 6 /10
Why do metal spoons feel colder than wooden ones?

Metal conducts heat away faster
Metal attracts cold air
Wood generates warmth
Metal blocks heat from your hand
No. 7 /10
What happens when salt is added to ice?

It lowers the freezing point
It makes ice warmer
It freezes the ice faster
It turns ice into vapor
No. 8 /10
Why do we see rainbows after rain?

Sunlight is refracted and reflected by raindrops
Raindrops release color
The sky becomes clearer
Sun heats moisture
No. 9 /10
Why do onions make you cry when chopped?

They release sulfur compounds
They produce acidic fumes
They emit water vapor
They lower air pressure
No. 10 /10
Why does warm air rise?

It is less dense than cooler air
Gravity pulls cold air down harder
Heat gives air molecules wings
Warm air is magnetic
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