Geology As Rocks Paper Questions
- 1.Write out the correct order of processes and rock formation in the rock cycle:, the processes are listed below: intrusion, recrystallisation, burial, extrusion, magma accumulation, partial melting, crystallisation, transportation, deposition, metamorphic rocks. diagenesis, weathering, heat & pressure, erosion,
- 2.Select a process of chemical weathering
- A.
Hydraulic action
- B.
Hydroactivity
- C.
Hydraulism
- D.
Hydrolysis
- 3.Animal burrows may cause biological weathering?
- A.
True
- B.
False
- 4.Tree roots growing in the cracks of rock is an example of biological weathering?
- A.
True
- B.
False
- 5.Offroading vehicles are an example of biological weathering?
- A.
True
- B.
False
- 6.What is hydraulic action?
- A.
Abrasion is when rocks rub against each other
- B.
The sheer strength of water crashing into rocks and knocking off loose fragments.
- C.
When rocks are chemically eroded and dissolve into the water and are carried in solution
- D.
When rocks become more rounded
- 7.What is abrasion?
- A.
The sheer strength of water crashing into rocks and knocking off loose fragments.
- B.
When rocks are chemically eroded and dissolve into the water and are carried in solution
- C.
When rocks become more rounded
- D.
When rocks rub against each other
- 8.What is attrition?
- A.
When rocks rub against each other
- B.
When rocks become more rounded
- C.
When rocks are chemically eroded and dissolve into the water and are carried in solution
- D.
Whe wearing away and transportation of weathered material by water wind and ice
- 9.What is corrosion?
- A.
When rocks rub against each other
- B.
When rocks are chemically eroded and dissolve into the water and are carried in solution
- C.
When rocks become more rounded
- D.
The sheer strength of water crashing into rocks and knocking off loose fragments.
- 10.Name all four methods of transportation.
- 11.Igneous rocks are formed by the crystallisation of which materials
- A.
Ash
- B.
Magma
- C.
Lava
- D.
All of the above
- 12.How are sedimentary rocks formed?
- A.
Heat, pressure, recrystallisation
- B.
Formed by compaction and cementation or sediment produced by erosion and weathering of older rocks
- C.
Partial melting, magma accumulation, intrusive, extrusive
- D.
Formed by crystallisation of magma, lava or ash
- 13.How are metamorphic rocks formed?
- A.
Formed by compaction and cementation or sediment produced by erosion and weathering of older rocks
- B.
Partial melting, magma accumulation, intrusive, extrusive
- C.
Produced when igneous/sedimentary rocks are subjected to changing heat/pressure within the earth.
- D.
Formed by crystallisation of magma, lava or ash
- 14.Sedimentary processes are:
- A.
Weathering/Erosion
- B.
Extrusion/intrusion
- C.
Abrasion
- D.
Crystallisation/burial
- E.
Diagenesis
- F.
Transportation/deposition
- 15.Igneous processes are:
- A.
Diagenesis
- B.
Partial melting
- C.
Lithification
- D.
Magma accumulation
- E.
Intrusive/extrusive
- 16.Metamorphic processes are:
- A.
Cementation
- B.
Recrystallisation
- C.
Heat
- D.
Pressure
- E.
Burial
- F.
Diagenesis
- 17.An example of a silicic rock is granite or rhyolite, they contain lots of quartz and feldspar. What percentage silica is a silicic rock?
- A.
52%
- B.
44%
- C.
66%
- D.
>44%
- 18.Intermediate rocks have are darker in colour and examples are diorite and andesite. What percentage of silica are intermediate rocks?
- A.
52-66%
- B.
>44%
- C.
66%
- D.
52%
- 19.Mafic rocks are darker in colour and examples are gabbro, dolerite and basalt. What percentage of silica are mafic rocks?
- A.
66%
- B.
44-52% silica
- C.
>44%
- D.
52-66%
- 20.Ultramafic rocks are the darkest of all rocks, an example is peridotite. What percentage silica are ultramafic rocks?
- A.
44-52%
- B.
>44%
- C.
52-66%
- D.
66%
- 21.Igneous rock grain sizes are described in what terms?
- A.
Coarse
- B.
Crystal
- C.
Medium
- D.
Fine
- E.
Grain
- 22.The longer the igneous rock takes to cool, the
- 23.Name a coarse grained igneous rock:
- 24.Name a medium grained igneous rock:
- 25.Name a fine grained igneous rock:
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