Atmospheric pressure
Why don't we get crushed under the weight of air above us?
Why does aluminium resist rusting?
Shouldn't metals corrode?
Vacuum bottles
Why do thermos flasks keep drinks hot or cold longer?
Why is graphite used in pencils?
What makes it smooth to write with?
Surface tension
Why do small insects walk on water?
Why is copper used in electrical wires?
Why not iron or aluminium?
Capillary action
How do trees lift water up from roots to leaves without pumps?
Why does hydrogen act both like a metal and a non-metal?
Why is it special?
Ohm's Law Unplugged
Why does a bulb glow brighter when you increase the voltage?
Why does iron rust but aluminium doesn't?
Both are metals, so why the difference?
Resistance in Real Life
Why do thick wires heat less than thin wires?
Why is mercury used in thermometers?
Couldn't we use water instead?
Series vs Parallel
Two bulbs are connected in series. If one burns out, what happens to the other?
Why is zinc used for galvanizing iron?
What's the science behind this coating?
Why Homes Prefer Parallel
Why are household circuits always connected in parallel, not series?
Study Materials
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