The weight of a substance is related to the effect of force of ------- on that substance.
Friction
Wind
Gravity
None of these
When lunar eclipse occurs the shadow of earth falls on -----------
Sun
Moon
Jupiter
Mars
From the following which is the optimum distance between sun and earth.
150 million light year
150 million Km
1000 million light year
1000 million Km
The layer of rocks which forms the surface of earth is called -----------
Lithosphere
Hydrosphere
Thermosphere
Atmosphere
Which layer present in the atmosphere absorbs harmful ultra violet radiations?
Keratin layer
Ozone layer
Radiation layer
None of thes
Which is the richest gas present in Earth?
Oxygen
Nitrogen
Hydrogen
Helium
Which position does the Earth stands in terms of size in our solar system?
7th
3rd
5th
2nd
From the following which indicates the percentage of water present on earth surface?
80%
99%
50%
71%
What is the average distance between earth and moon.
3, 80,000 km
3, 85,000 km
3,90,000 km
3,95,000 km
Who is the Greek philosopher: Who state that the earth was in spherical shape?
Euclid
Archemides
Pythagoras
Aryabhatta
