Why are some parts of Scotland steep and some parts of Scotland flat? Scotland Rocks! Presentation...

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Why are some parts of Scotland steep and some parts of Scotland flat? Scotland Rocks! Presentation © Hodder Gibson 2012

Transcript of Why are some parts of Scotland steep and some parts of Scotland flat? Scotland Rocks! Presentation...

Page 1: Why are some parts of Scotland steep and some parts of Scotland flat? Scotland Rocks! Presentation © Hodder Gibson 2012.

Why are some parts of Scotland steep andsome parts of Scotland flat?

Scotland Rocks!

Presentation © Hodder Gibson 2012

Page 2: Why are some parts of Scotland steep and some parts of Scotland flat? Scotland Rocks! Presentation © Hodder Gibson 2012.

Presentation © Hodder Gibson 2012

The reason the Scottish Landscape is so varied is because it is made up of lots of different types of rocks all of which have different forces acting upon them shaping the landscape.

Page 3: Why are some parts of Scotland steep and some parts of Scotland flat? Scotland Rocks! Presentation © Hodder Gibson 2012.

There are three main types of rock:

Metamorphic rocks

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Sedimentary rocks

Igneous rocks

Page 4: Why are some parts of Scotland steep and some parts of Scotland flat? Scotland Rocks! Presentation © Hodder Gibson 2012.

Presentation © Hodder Gibson 2012

Sedimentary rocks

Sedimentary rocks are formed from the compressed remains of other rocks. They tend to form under water and often contain fossils.

Page 5: Why are some parts of Scotland steep and some parts of Scotland flat? Scotland Rocks! Presentation © Hodder Gibson 2012.

Presentation © Hodder Gibson 2012

Igneous rocks

Igneous rocks are formed from within the earth’s crust from the cooling of molten material they are sometimes extruded

onto the earth surface (for example at volcanoes).

Page 6: Why are some parts of Scotland steep and some parts of Scotland flat? Scotland Rocks! Presentation © Hodder Gibson 2012.

Presentation © Hodder Gibson 2012

Metamorphic rocks

Metamorphic rocks have been changed and hardened by extreme heat from molten rocks within the crust or have been made by great pressure caused by earth movements.

Page 7: Why are some parts of Scotland steep and some parts of Scotland flat? Scotland Rocks! Presentation © Hodder Gibson 2012.

Presentation © Hodder Gibson 2012

The Geologyof Scotland

Page 8: Why are some parts of Scotland steep and some parts of Scotland flat? Scotland Rocks! Presentation © Hodder Gibson 2012.

Characteristics of rocks

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Some rocks are relatively soft (eg: salt)…

…while others are relatively hard.

Page 9: Why are some parts of Scotland steep and some parts of Scotland flat? Scotland Rocks! Presentation © Hodder Gibson 2012.

Presentation © Hodder Gibson 2012

Characteristics of rocks

Some rocks are permeable – they allow water to drain through them easily. Others are impermeable and keep all water on the surface.

Page 10: Why are some parts of Scotland steep and some parts of Scotland flat? Scotland Rocks! Presentation © Hodder Gibson 2012.

All rocks, even the hardest ones, have

weaknesses.

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Page 11: Why are some parts of Scotland steep and some parts of Scotland flat? Scotland Rocks! Presentation © Hodder Gibson 2012.

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All over the Earth, rivers, waves, glaciers and the wind are hard at work, shaping the landscape. We call them geological agents.

they carry or transport it somewhere else...

then they drop or deposit it.

They pick up or erode weathered material...

What shapes the land?

Page 12: Why are some parts of Scotland steep and some parts of Scotland flat? Scotland Rocks! Presentation © Hodder Gibson 2012.

Presentation © Hodder Gibson 2012

Ocean waves, created by the wind, crash into the coastline and over time erode to form caves, stacks, stumps and arches.

Chesil Beach, Dorset

Waves drag sediment along coast and deposit

material in sheltered coves forming beaches.

Sennen Cove, Cornwall

Page 13: Why are some parts of Scotland steep and some parts of Scotland flat? Scotland Rocks! Presentation © Hodder Gibson 2012.

Kirkaig Falls

Volga Delta

Kirkaig FallsRivers flow over rocks of different resistance, eroding them at different speeds to create impressive waterfalls.

When rivers reach the sea they lose energy and deposit sediment

that can form large deltas.Presentation © Hodder Gibson 2012

Page 14: Why are some parts of Scotland steep and some parts of Scotland flat? Scotland Rocks! Presentation © Hodder Gibson 2012.

The wind picks up small particles of rock and blows it into bigger rocks slowly eroding and scratching them away over time.

In some hot deserts, when the wind drops in speed and loses energy, it deposits sand forming sand dunes.

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Page 15: Why are some parts of Scotland steep and some parts of Scotland flat? Scotland Rocks! Presentation © Hodder Gibson 2012.

When the ice melts some of these rocks are

deposited and left behind. (Erratic)

Mer de Glace, France

Glaciers erode by plucking and abrading rocks from the valley sides.

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Austwick, North Yorkshire

Page 16: Why are some parts of Scotland steep and some parts of Scotland flat? Scotland Rocks! Presentation © Hodder Gibson 2012.

Your Turn!

Read pages: 16 and 17

Answer Questions: 1–3

Presentation © Hodder Gibson 2012