, 3
3 The table shows the bulk composition of a sample from a chondritic meteorite that fell to Earth
in 1934.
Oxide Weight (%)
SiO2 39.1
Al 2O3 1.9
FeO 31.5
MgO 20.7
CaO 1.5
Others 5.3
Which layer of the Earth has a composition most similar to this meteorite?
A Continental crust
B Mantle
C Oceanic crust
D Outer core
Your answer [1]
4 The nebular hypothesis explains the formation of the Solar System.
What is the correct order of the formation of the Solar System according to this hypothesis?
Earliest event Latest event
A Giant nebula collapses Rotation decreases and Formation of planetesimals
protoplanetary disc forms
B Giant nebula collapses Rotation increases and Formation of planetesimals
protoplanetary disc forms
C Rotation decreases and Formation of planetesimals Giant nebula collapses
protoplanetary disc forms
D Rotation increases and Formation of planetesimals Giant nebula collapses
protoplanetary disc forms
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