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					Unit 3D: Rocks and Soils




              Unit 3D: Rocks and Soils
Unit 3D: Rocks and Soils


Rocks and Soils




                           Unit 3D: Rocks and Soils
Unit 3D: Rocks and Soils
Some useful words



   Slate –

   Marble –

   Chalk –
                       The names of
                       different rocks
   Granite –

   Sand –

   Clay –

   Texture – how the surface of a rock would feel

   Absorbent – a rock that will soak up water




                              Unit 3D: Rocks and Soils
Unit 3D: Uses of Rocks
Uses of Rocks




                         Unit 3D: Uses of Rocks: L.O. 1: N.C.
Unit 3D: Grouping Rocks
Grouping Rocks




   For each of the rocks available make as many observations as you can. Record the details in a table



                            Size of            Shape of         Colours on the Texture of the
       Rock type
                           particles           particles             rock           rock




                                Unit 3D: Grouping Rocks: L.O. 2, 3: N.C.
Unit 3D: Testing Rocks
Testing Rocks

   We can test rocks to compare them

   1) Rubbing test – we can rub 2 rocks together to see how easily they are worn away.

   Take 2 rocks of the same type and rub them together. Collect and examine any particles that are
   formed.

   Rank your rocks in order of ease of wearing away.

   Which rock is the hardest?



   2) Permeability – absorption test. Drop small amounts of water onto each rock to see if any is soaked
   up.



   You will only need very small amounts of water, note how quickly the water is soaked up by each rock.




                              Unit 3D: Testing Rocks: L.O. 4: N.C.
Unit 3D: Different Rocks different uses
Different Rocks different uses




   Granite                             Marble                              Slate




  doesn’t wear away                    is attractive                       weather-proof




                   Unit 3D: Different Rocks different uses: L.O. 5: N.C.
Unit 3D: Where are all the rocks?
Where are all the rocks?




                     Unit 3D: Where are all the rocks? L.O. 6: N.C.
Unit 3D: Observing Soils
Observing Soils




   Use the equipment provided to separate the soil particles, write down any observations you can about each soil sample



      Soil type     Size of particles Shape of particles Colours on the rock Texture of the rock




                                Unit 3D: Observing Soils: L.O. 8, 9: N.C.
Unit 3D: Water flowing through soil
Water flowing through soil




   Why do puddles stay in some places longer than others?




              Unit 3D: Water flowing through soil: L.O. 10, 11, 12, 13, 14: N.C.
Unit 3D: Different Rocks, different soil
Different Rocks, different soil


    Chalk                           Clay




                    Unit 3D: Different Rocks, different soil: L.O. 7: N.C.
Unit 3D: Water flowing through soil
…cont




   You are to investigate the relationship between type of soil and how easily water flows through the soil.

   What will you measure?

   How much water will you use?

   How will you keep the test fair?

   Record your results and put the soils in order


                Unit 3D: Water flowing through soil: L.O. 10, 11, 12, 13, 14: N.C.
Unit 3D: Summary

                                                                                     Building



                     Rub                                                                Etc.




                                                                                     Particles
                   Absorbency
                   (permeability)                                                      Colour


                                                                                       Texture

  Hard
                                              Rocks and soils


                                                                    Depend on rock
   Not permeable


                                                                           Sieved


                                                                           Water flows easily
                                                                           through some soils
  Looks good




                                Unit 3D: Rocks and Soils: Summary

				
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posted:10/11/2011
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