Density of the mantle varies between
3.0 gm/cm3 and 3.7 gm/cm3
5.5 gm/cm3 and 5.0 gm/cm3
3.3 gm/cm3 and 5.5 gm/cm3
3.0 gm/cm3 and 5.5 gm/cm3
The average thickness of Earth's mantle is about
2840 km
2880 km
2440 km
2480 km
The radius of the core of the Earth is about
3500 kms
4500 kms
5300 kms
4450 kms
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
The copper Mantle is in
Solid state
liquid state
Partially molten state
Molten state
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 the Earth's outermost layer, the Earth's crust, is about
17 km
18 km
27 km
07 km
The boundary between crust and Mantle of the Earth is called
Gutenberg Discontinuity
Mid Atlantic Ridge
Mohorovicic Discontinuity
SIAL
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 composite zone inhabited by most living creature is called
Atmosphere
Lithosphere
Hydrosphere
Biosphere
