______ is caused due to revolution of the earth.

_______ is described as the Red Planet.

______ percentage of Earth is covered by salt water.

What was the first metal discovered by the early humans?

Which is the first pet animal of man?

Paleolithic humans

_____was used to produce fire.

Early man lived in ----

_______is the first scientific invention of the man

Early man lived _______ kind of life.

In Tamil Nadu _____ are the archaeological sites.

_______was produced when copper, zinc, tin are mixed together.

________ age is commonly called new Stone Age.

The study of coins is called________

Pick the odd one out from the below.

Solar system is present in the _____ galaxy.

There are _____ continents in the earth.

________ is the continent full of snow.

The smallest planet in the Solar System is ______.

Who proposed Big Bang Theory?

In which planet do we find the biggest volcano?

_______is called the evening star

______ is the major source of energy.

Which planet has maximum number of Moons?

Keeladi civilization was found near ____ river.

Asteroids are found between_______

_______ is the group of stars in a pattern

Which animal in the following is extinct?

The layer of air around the earth is _____