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141.Which type of rock may contain fossils?
A.     Igneous
B.     Metamorphic
C.    Sedimentary
D.    Crystals

142.The mass is highly concentrated form of
A.     Weight
B.     Energy
C.    Force
D.    Momentum

143.The whole Earth can be covered by ________ geo-stationary satellites.
A.     3
B.     4
C.    5
D.    6

144.The ozone layer is at height of ________ kilometers from the surface of the Earth.
A.     10 to 20
B.     20 to 30
C.    30 to 40
D.    40 to 50

145.The ozone layer was discovered by
A.     F.W. Aston and J.J Thomson
B.     Albert Einstein
C.    Rutherford
D.    Charles Fabry and Henri Buisson

146.The interior structure of the Earth is divided into ________ layers.
A.     4
B.     5
C.    6
D.    7

147.We live on the Earth's
A.     Inner core
B.     Outer core
C.    Crust
D.    Mantle

148.The thickest layer of the Earth is
A.     Crust
B.     Inner core
C.    Outer core
D.    Mantle

149.The outermost layer of the Earth is
A.     Crust
B.     Inner mantle
C.    Outer mantle
D.    Core

150.The Earth's crust ranges from ________ km in depth.
A.     0-5
B.     5-10
C.    5-70
D.    10-70
ANSWERS:
141.C
142.B
143.A
144.B
145.D
146.B
147.C
148.D
149.A

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