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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...
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....
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...
How Does Exterior Wall Colors Affect The Temperature Inside A Building? | Radiation Experiment
Radiation heat transfer experiment – The aim of the experiment is to investigate whether the amount of infrared...
Why Are Heaters Placed Near The Floor & Air Conditioners Near The Ceiling?
The heater is placed near the floor because the air currents move upwards so the hot air fills...
How Does A Thermos Flask Work?
The vacuum flask consists of two vessels, one placed within the other and joined at the neck. The...
Why Is The Back Of A Refrigerator Painted Black?
It could simply be that black paint is cheaper… But I believe that the external coils on the...
Heat
According to heat definition, it is one of the essential forms of energy for the survival of life...