Uses of Doppler effect

• Doppler effect principle is used in RADAR to determine the velocities and movements of submarines and aircrafts

Top 10 largest deserts

1.  Sahara
2. Arabian
3. Gobi

The mystery of Bermuda triangle

One of the most baffling, puzzling and intriguing mysteries that has bewildered the world so far is the famous Bermuda triangle. No other mystery is so well known, yet so little is known about it.

How does a chameleon change its colour?

The upper layer of Chameleon’s skin is transparent but the layer just underneath it has granular yellow, black and red pigments. These granules can easily move from one point in its body to another. When these cells contract, the concentration of the the granules increases at one point turning the colour of the skin into black. And in turn they get scattered throughout the body , other colours are produced. Therefore, the contraction and expansion of its cells change the colour of its skin

FIFA World Cup trophy facts

•  It weighs a little more than 5 kg and it measures 36.5 cm vertically
• It is made of 18 carat gold and has a base of 13 cm in diameter

Differences between plant cell and animal cell

Animal cell

The largest

Largest Land animal – Elephant
Largest animal – Blue whale
Largest Bird – Ostrich

11 ways of conserving water in houses