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Rocks their appearance

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This document discusses different types of rocks and their properties. It describes the three main types of rocks - sedimentary, metamorphic, and igneous rocks - and provides examples of each type. Key details about each rock type are given, such as sedimentary rocks often containing layers and fossils, metamorphic rocks usually being harder than sedimentary rocks and containing thin layers, and igneous rocks generally being the hardest and containing crystals. The document also discusses where rocks come from and the composition of the Earth's crust.

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Rock Hard • Describe the texture of different rocks • Find out if a rock is porous. • Describe the basic structure of the earth. 1 of 42 © Boardworks Ltd 2008

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Some key words • Mineral • Grain • Porous • Sedimentary rock • Metamorphic rock • Igneous rock • Interlocking 2 of 42 © Boardworks Ltd 2008

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• Draw a simple version of the earth, what is it made of? • Then listen to the song and try to draw it again. 3 of 42 © Boardworks Ltd 2008

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Where do the rocks come from? We get many useful substances from rocks, such as building materials, metals, pigments and jewels. But where do we get the rocks themselves from? They come from the Earth’s crust. The Earth’s crust is the thin outer layer of the Earth. It is about 30 km thick on land and only about 8 km thick under the sea. crust mantle inner core outer core 4 of 42 © Boardworks Ltd 2008

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What is the Earth’s crust made of? 5 of 42 © Boardworks Ltd 2008

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Minerals and metals Many of the useful substances we get from the Earth’s crust are minerals, which contain metals. Here are the names and formulae of some of the most common minerals. mineral formula metal extracted from it Fe2O3 Al2O3 PbS TiO2 CuFeS2 haematite bauxite galena rutile chalcopyrite iron aluminium lead titanium copper 6 of 42 © Boardworks Ltd 2008

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PPrrooppeerrttiieess ooff ccrryyssttaallss Classify the images according to their crystals Are the crystals… 1)Rounded or angular? 2)Interlocking or spaced? 3)Same size or different? 4)Same colour or different? 5)Random or regular? Which is igneous, metamorphic or sedimentary? 7 of 42 © Boardworks Ltd 2008

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Identifying rocks: summary type examples description 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 8 of 42 © Boardworks Ltd 2008

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• Describe one of your rocks. • Can you tell which one it is. 9 of 42 © Boardworks Ltd 2008

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• What does porous mean? • How can you test to see if it is or not? 10 of 42 © Boardworks Ltd 2008

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• Answer the questions on page 106-107 • What are the main types of rock? 11 of 42 © Boardworks Ltd 2008

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Identifying rocks: summary type examples description 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 12 of 42 © Boardworks Ltd 2008

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Different rocks = different uses 13 of 42 © Boardworks Ltd 2008

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• Can you beat the teacher at hangman? 14 of 42 © Boardworks Ltd 2008

More Related Content

Rocks their appearance

  • 1. Rock Hard • Describe the texture of different rocks • Find out if a rock is porous. • Describe the basic structure of the earth. 1 of 42 © Boardworks Ltd 2008
  • 2. Some key words • Mineral • Grain • Porous • Sedimentary rock • Metamorphic rock • Igneous rock • Interlocking 2 of 42 © Boardworks Ltd 2008
  • 3. • Draw a simple version of the earth, what is it made of? • Then listen to the song and try to draw it again. 3 of 42 © Boardworks Ltd 2008
  • 4. Where do the rocks come from? We get many useful substances from rocks, such as building materials, metals, pigments and jewels. But where do we get the rocks themselves from? They come from the Earth’s crust. The Earth’s crust is the thin outer layer of the Earth. It is about 30 km thick on land and only about 8 km thick under the sea. crust mantle inner core outer core 4 of 42 © Boardworks Ltd 2008
  • 5. What is the Earth’s crust made of? 5 of 42 © Boardworks Ltd 2008
  • 6. Minerals and metals Many of the useful substances we get from the Earth’s crust are minerals, which contain metals. Here are the names and formulae of some of the most common minerals. mineral formula metal extracted from it Fe2O3 Al2O3 PbS TiO2 CuFeS2 haematite bauxite galena rutile chalcopyrite iron aluminium lead titanium copper 6 of 42 © Boardworks Ltd 2008
  • 7. PPrrooppeerrttiieess ooff ccrryyssttaallss Classify the images according to their crystals Are the crystals… 1)Rounded or angular? 2)Interlocking or spaced? 3)Same size or different? 4)Same colour or different? 5)Random or regular? Which is igneous, metamorphic or sedimentary? 7 of 42 © Boardworks Ltd 2008
  • 8. Identifying rocks: summary type examples description 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 8 of 42 © Boardworks Ltd 2008
  • 9. • Describe one of your rocks. • Can you tell which one it is. 9 of 42 © Boardworks Ltd 2008
  • 10. • What does porous mean? • How can you test to see if it is or not? 10 of 42 © Boardworks Ltd 2008
  • 11. • Answer the questions on page 106-107 • What are the main types of rock? 11 of 42 © Boardworks Ltd 2008
  • 12. Identifying rocks: summary type examples description 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 12 of 42 © Boardworks Ltd 2008
  • 13. Different rocks = different uses 13 of 42 © Boardworks Ltd 2008
  • 14. • Can you beat the teacher at hangman? 14 of 42 © Boardworks Ltd 2008