Presentation is loading. Please wait.

Presentation is loading. Please wait.

© Boardworks Ltd 20091 of 13. 2 of 13© Boardworks Ltd 2009 Different types of rock There are many different types of rocks in the world.

Similar presentations


Presentation on theme: "© Boardworks Ltd 20091 of 13. 2 of 13© Boardworks Ltd 2009 Different types of rock There are many different types of rocks in the world."— Presentation transcript:

1 © Boardworks Ltd 20091 of 13

2 2 of 13© Boardworks Ltd 2009 Different types of rock There are many different types of rocks in the world.

3 3 of 13© Boardworks Ltd 2009 Identifying rocks

4 4 of 13© Boardworks Ltd 2009 Identifying rocks: summary sedimentary metamorphic igneous sandstone and limestone marble and slate basalt and granite the softest rock type, containing layers and sometimes fossils usually harder than sedimentary rocks, containing thin layers and twisted fossils usually the hardest rock type, containing shiny crystals type examples description

5 5 of 13© Boardworks Ltd 2009 Different rocks = different uses

6 6 of 13© Boardworks Ltd 2009 Formation of sedimentary rocks

7 7 of 13© Boardworks Ltd 2009 Formation of metamorphic rocks Sedimentary rocks are turned into metamorphic rocks by the extreme pressures and temperatures deep within the Earth. These conditions change the structure of the rocks so that new layers are formed. Heat and pressure compress grains Grains form orderly layers Mixture of grains in structure pressure heat more pressure more heat

8 8 of 13© Boardworks Ltd 2009 Formation of igneous rock Magma is a type of molten rock found deep underground. Occasionally magma rises up through the Earth’s surface, causing volcanic eruptions. When magma cools above the surface, extrusive igneous rocks are formed. Igneous rocks are formed when the magma cools and solidifies. When magma cools below the surface, intrusive igneous rocks are formed. extrusive igneous rock intrusive igneous rock magma

9 9 of 13© Boardworks Ltd 2009 Crystal size in igneous rocks

10 10 of 13© Boardworks Ltd 2009 The rock cycle

11 11 of 13© Boardworks Ltd 2009 The rock cycle: in words

12 12 of 13© Boardworks Ltd 2009 The rock cycle: summary

13 13 of 13© Boardworks Ltd 2009 From weathering to sedimentation


Download ppt "© Boardworks Ltd 20091 of 13. 2 of 13© Boardworks Ltd 2009 Different types of rock There are many different types of rocks in the world."

Similar presentations


Ads by Google