WorksheetsPearson 8.4 Review Questions
Total questions: 22
Worksheet time: 13mins
Which best fits the definition for: TECTONIC PLATES
process where rock is altered mostly by heat
massive structures that make up the Earth’s crust
folding or sliding different parts of the rock formation
Which best fits the definition for: SHEARING
process where rock is altered mostly by heat
massive structures that make up the Earth’s crust
folding or sliding different parts of the rock formation
Which best fits the definition for: CONTACT METAMORPHISM
process where rock is altered mostly by heat
massive structures that make up the Earth’s crust
folding or sliding different parts of the rock formation
What is the best definition for: foliation
the process where rock is transformed mainly by pressure
sideways movement of parts within a rock
the banding that is found in some metamorphic rocks
What is the best definition for: dynamic metamorphism
the process where rock is transformed mainly by pressure
sideways movement of parts within a rock
the banding that is found in some metamorphic rocks
What two gemstones are sometimes found in metamorphic rocks
Rose quartz
Garnet
Diamond
Emerald
What two types of metamorphic rocks can slate turn into?
Schist
Basalt
Shale
Gneiss
What layer of the Earth do metamorphic rocks form in?
Crust
Mantle
Inner Core
Outer core
What two processes are involved in forming metamorphic rocks?
Location
Heat
Water removal
Pressure
Mineral composition
What three changes can occur in rocks as the metamorphose?
Water is squeezed out of the rock.
Crystals can melt and then reform into crystals of new minerals (recrystallisation).
Rocks can become more brittle.
Crystals can grow into flattened sheets.
Bands of different minerals form when crystals are squashed flat by forces in the Earth while they are hot.
This is a definition for a ___________ metamorphic rock: "Crystals that are forming under great force may become squashed flat or into long needle shapes. The rock may then develop layers or bands (foliation). The amount of banding depends on the amount of heat and force. Bands in a rock are not always straight. They can be wavy, depending on the direction of the force."
foliated
banded
banding
band
foliating
Heat energy is vitally important in the formation of many metamorphic rocks. The heat:
melts minerals and this causes change in the crystal composition and colour of the rock.
melts crystals and this causes change in the mineral composition and texture of the rock.
melts crystals and this causes change in the mineral composition and colour of the rock.
melts minerals and this causes change in the crystal composition and texture of the rock.
Predict which clay figure will be strongest— one
that is fired in a kiln or one that is left unfired
fired in the kiln
unfired
Consider the following description of a rock: "It is a light-coloured rock with white and grey crystals visible. The grains seem to be inter locking. It looks a bit like granite, but there are five wavy darker bands running right through the rock. The grains in the bands look like they are black or dark green. They seem to be very flat under the microscope. The flat dark crystals seem to be all lined up." Which three of the following would describe this rock?
Foliated
Dark-coloured wavy bands with flat crystals
Unfoliated
The black mica (biotite) in gneiss is squashed into bands, but it is not squashed into bands in granite.
The black mica (biotite) in granite is squashed into bands, but it is not squashed into bands in gneiss.
It is possible for metamorphic rocks to form at the Earth’s surface. What two ways do you think this might happen?
Lava comes into contact with rocks on the surface and melts them.
High temperatures from the sun during the day
Pressure from cars driving over them all day
If earth is buckled when huge Earth movements create mountains.
What process is demonstrated in this diagram?
The rock cycle
Weathering
Decreasing metamorphism
Increasing metamorphism
How do you think the four different metamorphic rocks could all form from shale?
Increasing heat
Increasing pressure
Increasing heat and pressure
None of the above
What process is happening at: 1
Compaction and cementation
Crystallisation
Melting
Weathering, erosion, deposition
Intense heat and/or pressure
What process is happening at: 2
Compaction and cementation
Crystallisation
Melting
Weathering, erosion, deposition
Intense heat and/or pressure
What process is happening at: 3
Compaction and cementation
Crystallisation
Melting
Weathering, erosion, deposition
Intense heat and/or pressure
What process is happening at: 4
Compaction and cementation
Crystallisation
Melting
Weathering, erosion, deposition
Intense heat and/or pressure
What process is happening at: 5
Compaction and cementation
Crystallisation
Melting
Weathering, erosion, deposition
Intense heat and/or pressure
