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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 | 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...
Summer solstice in India
The summer solstice, also called the estival solstice or midsummer, occurs when one of Earth’s poles has its maximum tilt toward the Sun. It happens...
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...
HOTS | What do burning Wool and Cotton smell like?
Burning Cotton smells like Burning Paper, whereas burning wool smells like burning hair. Why? Ans. Cotton and paper,...
Are Weak and Dilute Acids the Same? | HOTS
Weak and Dilute Acids – What’s the difference? People often think that weak and dilute acids are just...
Why is Time always on X-Axis in a Graph | Time & Motion | HOTS | Class 8
In physics, different quantities are often represented on graphs and very commonly time is represented on the horizontal...
Why does your tongue burns when you eat something Hot | HOTS | The Tongue
Have you ever been so excited to drink the first bite of pizza, but your tongue burns because...
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....
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...
What is Osmosis? |Potato Experiment
Osmosis is a vital process in biological systems, as biological membranes are semipermeable. In general, these membranes are...
Egg in Vinegar Experiment | What Happens If You Put A Raw Egg in Vinegar?
A well-known chemistry experiment is done by placing an egg (raw or boiled) into a container filled with...
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...
How Can We Use A Lever To Move An Object Without Picking It Up?
We encounter various types of lever in our everyday lives: opening a drink with a bottle opener, cutting...
What Are The Different Kinds of Levers?
Levers are a simple machine consisting of a beam or rigid rod pivoted at a fixed hinge, or...
Heat
According to heat definition, it is one of the essential forms of energy for the survival of life...