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Hurricanes
Hurricanes are large, swirling storms. They produce winds of 119 kilometers per hour (74 mph) or higher. That’s...
HOTS | Pollution & Plastics | Why should we not throw plastic bottles into the river?
Water pollution (or aquatic pollution) is the contamination of water bodies, usually as a result of human activities, so that it...
HOTS | Respiration In Organisms | Heart Beats Faster During Exercise Or while Running
Respiration In Organisms – Heart Beats Faster During Exercise Or while Running Q. WHEN YOU RUN, YOUR BREATHING...
Taj Mahal turning Yellow – Marble Cancer
The most common culprit for Taj Mahal turning Yellow is iron, which when exposed to water, acids or...
Why do Racing Cars have Flat Tyres?
Have you ever wondered, why the racing cars have flat tyres ? Why are their tyres unique and...
LPG has no smell of its own | LPG is an odourless gas| Fuels | Coal & Petroleum | HOTS
If LPG is an odourless gas, then how do we detect a gas #leakage? Ans. This is not...
2 Thin Woolen Sweaters are warmer than 1 thick one |Heat| Fibre to Fabric
Come winters and all of us like to wrap ourselves with colorful Woolen Sweaters…and as the temperature dips...
Earth vs Venus | HOTS | Class 8 | The Universe
Earth vs Venus – while they are two planets in our solar system, the former is the third...
Why do hanging hoardings and banners have holes? | Winds, Storms & Cyclones | HOTS
You may have seen holes made in huge hoardings and banners. Why are these necessary? Let’s find it...
Why do Electric Wires Sag in Summers?| Heat | Thermal Expansion | Class 7
In the summer, because of thermal expansions, the electric wires sag, and in the winter, due to contraction, they...
Why are electric wires made of Copper & not Silver | Electricity | HOTS
Silver is a precious metal and it is the only metal with a higher electrical conductivity than copper....
| Friction | Holding A Glass With Oil In Your Hands Tends To Slip. Why?
This is the stopping force that opposes the relative movement or the tendency of relative motion of two...
If There Was No Friction, What Would Happen To A Moving Object?
Friction is the force resisting the relative motion of solid surfaces, fluid layers, and material elements sliding against...
Why Is Rolling Friction Less Than Sliding Friction?
We can understand sliding friction as the resistance force created between any two bodies when sliding against each...