Crust layer of earth is composed of…………...
a) Silicon
b) Aluminum
c) both a and b
d) None of these
Division of cores of earth includes……………
a) Inner core
b) Fault
c) Outer core
d) Both a and c
Plate Tectonics Theory:
The Theory of plate tectonics
explains ………of different plates of the Earth’s crust.
a) movement
b) Structure
c) altitude
d) none of these
According to geologists in beginning all the continents were joined together in a form of whole mass that was called………..
a) Laurasia
b) Gondwana
c) Pangaea
d) none of these
About 200 million years ago the Pangaea broke into how many continental and oceanic plates?
a) 4
b) 5
c) 7
d) 9
