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5.Which of the following is not true of sea-floor spreading?
Oceanic ridge is formed.
It is basically volcanic.
A depression called oceanic trench is formed.
The boundaries that experience this process are 'constructive'.
6.Subduction does not involve
Folding, faulting and oceanic trench.
Formation of volcanoes.
Plates moving away from each other.
A destructive plat boundary.
7.Earth's core is
low in temperature
made up of molten rock
made up of denser materials
in liquid state
8.What is Pangaea?
It is the name of an extinct volcano.
It is French word for volcano.
It is a single landmass whereby all the continents of present day are joined together.
It is a huge disruption of the Earth's atmospheric circulation.
9.The process subduction does not include
Plates move towards each other.
The thinner, less dense plate will slide under the denser plate.
The subducted plate melts to produce magma.
Magma rises through fractures in the crust and reaches the surface to form volcanoes.
10.The word Pangaea is:
An Italian word which means core
Spanish for lithosphere
Greek for fold mountains
Greek word for "all land"