Geology Data Analysis:
1) Label the image below using the words in the word bank.
Fast cooling
Extrusive
Intrusive
Magma
Intrusive igneous rock
Extrusive igneous rock
Fast cooling
Slow cooling
Slow cooling
Magma
2) Explain the relationship represented in the graph below.
Percentage Crystals
100
Percentage Crystalised (%)
90
80
70
60
50
40
30
20
10
0
0
2
4
6
8
10
12
14
Time Taken To Cool (Hours)
The longer the more hours the rock takes to cool, more of the rock is crystalised. c
3) What percentage of the rock is crystallised after 13 hours?
80% of the rock is crystalised after 13 hours. c
16
4) The diagram below shows a type of rock.
a. Name the rock type
The rock type is a sedimentary rock. c
b. Explain how these rocks are formed
The rock is formed by pressure squishing the rocks together to form a solid
rock.
c. Label the diagram with arrows and the terms sediment and sedimentation.
The specks in the rock are sediments and the layers are due to sedimentation
of other rocks being pressed into the original rock.
5) Classify the rocks below using the descriptions provided.
a. Rock 1 – this rock is non-foliated with a black appearance and fine grain.
Anthracite
b. Rock 2 – this rock appears glossy and has a fine grain.
Phyllite
c. Rock 3 – this rock is foliated with a coarse grain and banding.
Gneiss c
6) Explain what metamorphic rocks are and how they differ from igneous and
sedimentary rocks.
Metamorphic rocks are created by other rocks and sediments being pressed together with
heat. They are different from igneous, and sedimentary because sedimentary requires
pressure but not heat and igneous just requires heat to melt the rocks together.