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HOTS | Metals & Non Metals | Components of Food
A doctor diagnosed a patient with Iron deficiency, and gave him tablets containing iron. But the tablets were...
HOTS | Sound | Explosion on Moon -Will it be seen or heard on the earth instantly or after some time
Will it be seen or heard on the earth instantly or after some time ? For more such...
Why do Racing Cars have Flat Tyres?
Have you ever wondered, why the racing cars have flat tyres ? Why are their tyres unique and...
Why does a Candle Flame point upwards | Combustion & Flame | HOTS |
Think of the candle flame as a #helium-filled balloon: No matter which way you hold the string or...
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...
How Does Rolling Friction Decrease Wear and Tear in Machinery?
When surfaces in contact move relative to each other, the friction between the two surfaces converts kinetic energy...
Heat – Understanding Conduction
Thermal conduction is the transfer of internal energy by microscopic collisions of particles and movement of electrons within...
Convection Experiment | Heat
Heat transfer is the transfer of heat or thermal energy between physical systems. So when there is a...