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The Rock Cycle
Play this quiz and see if you get all ten questions correct.

The Rock Cycle

This GCSE Geography quiz will test you on the rock cycle. The countryside around us, including the built environment, is often influenced by what lies underneath our feet - the rocks. Rocks form the Earth's crust and belong to one of three main groups - sedimentary, igneous and metamorphic. Their formation is linked by the rock cycle.

You can jump into the rock cycle at any point and follow it round, ending up back at your starting point. A logical place to start is the summit of a mountain, we can then follow a rock through one of the paths that it can take to end up back where it started. As a rock travels through the rock cycle, it changes from one type to another.

So let's imagine our rock at the top of a mountain.

Which of the following is NOT a type of weathering?
Saltation is a method of transport of rock particles and is therefore erosion and not weathering
Which of the following statements is NOT true?
Sedimentary rocks are usually formed under water
Metamorphic rocks have been melted
Igneous rocks are often associated with volcanoes
Metamorphic rocks can be made from igneous, sedimentary or other metamorphic rocks
It is important to realise that metamorphic rocks are NOT melted during their formation - if they were melted at any point, that would make them an igneous rock
The timescale of the rock cycle is:
millenia (a millenium is one thousand years)
millions of years
Rocks are millions of years old, some can be hundreds of millions of years old - very few rocks escape being changed by the rock cycle. The oldest rocks on Earth have been dated as being about 4 billion years old and were found in Canada. This means that they have been part of the rock cycle for almost as long as the Earth has existed!
Which type of rock is made from molten magma that has cooled down and solidified?
All three
They can form at the surface of the Earth or deep in the Earth's crust
Which of the following is the correct sequence that describes the formation of a sedimentary rock?
Suspension, deposition, compaction, cementation
Sedimentation, deposition, cementation, compaction
Suspension, compaction, cementation, deposition
Deposition, cementation, sedimentation, suspension
Sedimentation and deposition mean the same thing. Sediments are formed in layers which is why the majority of sedimentary rocks are layered
In a sequence of sedimentary rock layers, where would you find the most recently formed rock?
It would be the lowest layer
It would be the middle layer
It would be the topmost layer
It is impossible to tell without carbon dating the rocks
Folding of rocks caused by tectonic movements can cause rock sequences to be turned upside-down! This can sometimes cause problems to geographers when they try to interpret the history of a mountain range
Which word describes an ingneous rock that is formed deep within the crust of the Earth?
Granite is a good example of an intrusive igneous rock
Which rock type is formed by high pressures and temperatures?
All three
They are formed in the roots of mountain ranges where temperatures and pressures are greatest
At which type of plate boundaries are you most likely to find igneous rocks forming?
Conservative and destructive
Destructive and constructive
Constructive and conservative
They will form at all three types of plate boundary
These are the two places that molten magma reaches the surface of the Earth
Which of the following statements is incorrect?
Igneous rocks are made from grains of other rocks that have been cemented together
Sedimentary rocks normally form in layers
Both metamorphic and sedimentary rocks can contain visible layers
Igneous and metamorphic rocks often contain crystals
Any crystals that you find in sedimentary rocks are held in place by surrounding particles of sediment and were formed at an earlier date than the rock. The crystals of igneous and metamorphic rocks are formed at the same time as the rocks and are surrounded by other crystals
Author:  Kev Woodward

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