Question

i. The outer and the inner core are separated by- a) Conrad discontinuity ii) Lehman discontinuity iii) Mohorovicic discontinuity iv) None of these. ii. Our Earth has an average density of- b) 5.91g/cm3 b) 5.51g/cm3 c) 5.61g/cm3 d) 5.71g/cm3. iii. The term 'Plate' was first coined by- b) Mcenzie b) J.t Wilson c) Alfred Wegner d) Arthar Homes. iv. The Greek word 'tekton' means- b) to break b) to join c) to buid up d) to separate.​

Answer 1

Explanation:

a none of these

b 5.5g/cm3

c Alfred Wenger

d to build up