Your Email Address (NOT required)

1.What is the Earth made of?
The crust, the mantle and the core
The skin, the pulp and the core
The plates, the magma and the core
The land, the sea and the atmosphere

2.Which of the following statement is true about the continental crust?
It is made of relatively dense rocks.
It is made of relatively light materials.
It is about 7 km thick.
It is molten.

3.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'.

4.Subduction does not involve
Folding, faulting and oceanic trench.
Formation of volcanoes.
Plates moving away from each other.
A destructive plat boundary.

5.Earth's core is
low in temperature
made up of molten rock
made up of denser materials
in liquid state

6.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.

7.Subduction causes all of the following except
earthquakes
oceanic ridge
fold mountains
oceanic trench

8.Which of the following is not part of the process of sea-floor spreading?
Rocks break and a crack is formed between the plates when they move towards each other.
Magma rises through the crack and seeps out onto the ocean floor.
As magma meets the water, it cools and solidifies.
It piles up along the crack and adds to the edge of both plates.

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"