Soil

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ESSARP FAIR jun-25-2013

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Soil

  1. 1. SOILby Y5 St. Gregory´s College
  2. 2. Y5 StudentsEmiliano Matías Francisco Valentín TomásMartiniano Theo Nicolás JuanFederico Andrés Juan Franco TomásBlas Juan Santiago FernandoAlfonso Santiago Agustín Iván LuccaIsabella Florencia Donatella JazmínNazarena Malena Lucía Lucía Matilde MoraMaría Julieta Sofia Candelaria Flor GaliIsabella Angelina Juliana BelénManuelaTrinidad Martina María Milagros
  3. 3. SoilSoil provides plants with thesupport and nutrients they needto grow.We want to determine the bestsoil for growing plants in agarden.
  4. 4. Observation of the soil in an ecosystem1. We collected a sample of loam (garden)soil, clay (construction) soil and sandy soil.We labelled the pots.2. We observed the three samples andcompared the physical differences. We felteach sample with our hands and recordedthe results.
  5. 5. SAMPLE OFSOILCOLOUR SIZE OFPARTICLESORGANICMATTERWATER AIRLOAM(garden)DarkbrownBig andsmallA lot ofhumuswet A lotCLAY grey Very small No orlittledry A littleSAND Lightbrownbig A little dry A lotResults: Properties
  6. 6. We investigated the types of soilsLoam(garden soil)
  7. 7. Loam soil is dark brown and contains alot of organic matter called humus. It hasbig and small particles that form airspaces. It can also retain water so it ismoisted.
  8. 8. Clay(used in construction)
  9. 9. Clay soil is grey and has almost no organicmatter. It has very small particles thatforms very small air gaps. When it rains,the water forms puddles and the clay feelssticky since the clay soil is impermeable.
  10. 10. Sandy soil
  11. 11. Sandy soil is light brown and has littleorganic matter. It has big particles thatforms big air gaps. Water drains easilythrough the sand and it is not retained.This soil becomes dry as water evaporateson its surface.
  12. 12. SOIL PROFILES• We wanted to see the composition of each soil. For this:3. We got three flasks with water and we putthe soils into them.4. We stirred and allowed the samples to settlefor 30 min. We observed the results.
  13. 13. Soil Layers (Horizons)5. Then we mixed the three soils to compare them.
  14. 14. 6. Finally, we germinated radish seeds for a week and planted them in thethree different soils.We germinated radish seeds for 7 days
  15. 15. The best soil to grow plants is theloam because it has a lot of air,moisture and organic matter thatwill be decomposed for the plants to use.It is very important to choose theright soil for crops and to take careof it to produce enough food for thepeople.Conclusions
  16. 16. THE ENDThank you

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