According to plate tectonic theory, soild lithosphere consists of about
16 to 20 great slabs of rock
15 to 19 great slabs of rock
10 to 20 great slabs of rock
6 to 10 great slabs of rock
Choose the correct statement
SIAL is in solid state, SIMA is in liquid state.
SIMA is less denser than SIAL
SIMA "floats" on SIAL
The lighter SIAL is considered as "floating" on denser SIMA layer.
The average density of SIMA layer is about
5.3 gm/cm3
35 gm/cm3
3.0 gm/cm3
3 mgm/cm3
The main theories that explain the plate movement are
Gravity and Velocity
Velocity and convection
Conduction and Gravity
Gravity and convection
The average thickness of Earth's mantle is about
2840 km
2880 km
2440 km
2480 km
The average density of SIAL layer of earth is
7.5 gm/cm3
2.7 gm/cm3
72 gm/cm3
2.7 mgm/cm3
The formation of mountains are the result of
Divergent boundaries
Convergent boundaries
Transform fault boundaries
Earth quakes
According to plate tectonics great Himalayas formed when
Europe collided with Africa
Asia 'ran' into India
South America collided with Antartica
Laurasia collided with Gondwana land
Based on the type of plate movement there are
6 types of plate boundaries
3 types of plate boundaries
2 types of plate boundaries
5 types of plate boundaries
The Gutenberg Discontinuity is
The boundary between the Mantle and the core
The boundary between crust and mantle
The boundary between inner core and outer core
The boundary between Bary Sphere and Mesosphere