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 radius of the core of the Earth is about
3500 kms
4500 kms
5300 kms
4450 kms
The main theories that explain the plate movement are
Gravity and Velocity
Velocity and convection
Conduction and Gravity
Gravity and convection
The density of the core is
3.7 gm/cm3 at the centre
5.5 gm/cm3 at the centre
3.0 gm/cm3 at the centre
13.0 gm/cm3 at the centre
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 formation of mountains are the result of
Divergent boundaries
Convergent boundaries
Transform fault boundaries
Earth quakes
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
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
The density and temperature increases with depth of Earth where as pressure decreases with depth.
The density, temperature, and pressure do not vary with the depth of Earth.
The density temperature and pressure increases with the depth of Earth
The temperature and pressure increases with the depth of Earth and density decreases with the depth
The composite zone inhabited by most living creature is called
Atmosphere
Lithosphere
Hydrosphere
Biosphere
