Contents

The thickness of the mantle is about…….
a) 2900 km                         

b) 3500 km
c) 2,600 km                         

d) 2,400 km


Which layer of the earth is like the white of an egg
a) Core                                  

b) Crust
c) Mantle                                             

d) none of these


Mantle layer of earth is composed of…………
a) Iron                                   

b) Silicone
c) Magnesium                     

d) all of these


Temperature of the upper portion of the Mantle is
a) 550°C                                               

b) 870°C
c) 700°C                                               

d) 300°C


Temperature of the inner portion of the Mantle is
a) 550°C                                               

b) 870°C
c) 4,000°C                                            

d) 3,600°C


Core: