Transcript Rock posters - sedimentary - EAL Nexus

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EAL Nexus resource
Rocks - sedimentary
Subject(s):
Geography, Science
Age group(s):
8–11, 12–14, 15–16
Topic:
Types of rocks
Licence information | This resource is free to use for educational purposes. ©British Council 2014
Source | This resource was originally developed from a resource on TES by j33ffa , Charlotte Hurley and Alison Fisher and has been adapted by
EAL Nexus.
Limestone – sedimentary rock
(rock formed from sediment)
Limestone is formed from the shells and skeletons
of sea animals so may contain fossils.
© Hannes Grobe.
It is very heavy so it cannot be used for
light
tall buildings.
It reacts with acid rain,
which corrodes the
buildings.
© Coyau
It is easy to cut
and carve into
detailed
shapes.
© Serouj
heavy
Uses:
• buildings
• roads
• wall filler
• cement
Sandstone – sedimentary rock
(rock formed from sediment)
Sandstone is made of sand-sized
minerals or rock grains.
Sandstone comes in many colours such as
brown, yellow, red, grey, pink, white and
black, but is usually a reddish-brown.
The surface of
sandstone is rough.
Sandstone wears
away easily in the
rain and cold.
© Connie Ma
It is easy to carve,
but can crumble.
© Whitegoast.unk
Uses:
• buildings
• paving
• carvings
• sharpening
tools
Shale – sedimentary rock
(rock formed from sediment)
Shale is made of very fine rounded grains of
sediment that have compacted together.
Shale often
contains
fossils.
Shale is grey
to black in
colour.
Shale
contains mud
and flakes of
clay.
© Michael C. Rygel
Shale can be split into thin sheets.
Shale is often
found in lakes, by
rivers, on
floodplains and
offshore from
beaches.
Uses:
• tiles
• bricks
• pottery
Chalk – sedimentary rock
(rock formed from sediment)
Chalk is formed from the shells of one type
of sea creature.
Chalk is white.
© Michael King
Chalk doesn’t
weather easily, so
chalk cliffs still
stand by the sea.
Chalk is crumbly.
Chalk is porous
and can hold a
large amount of
water.
Uses:
• toothpaste
• fingerprint powder
• blackboard chalk
Limestone
Sandstone
Shale
Chalk
Limestone
• It is a sedimentary rock.
• It is formed from the shells of sea
animals.
• It may contain remains of fossils.
• It is used in buildings and to make
cement.
• It is heavy.
• It corrodes.
Sandstone
• It is a sedimentary rock.
• It is made of sand-sized grains of
similar sizes.
• It can be many colours, but is often
reddish brown.
• It feels rough.
• It is easy to carve.
• It can crumble.
• It can be used to sharpen tools.
Shale
It is a sedimentary rock.
It is made of very fine rounded grains.
Fossils are often found in it.
It forms layers which can be split into
thin sheets.
• It can be used to make tiles.
• It is formed in lakes.
•
•
•
•
Chalk
• It is a sedimentary rock.
• It is formed from the shells of a
particular sea animal.
• It is white.
• It is porous.
• It is used to write on blackboards.