Soil and Requirements for Plant Growth

Complete the following Wizer.me sheet to demonstrate your understanding of the topic covered in unit 3, activity 1. What is the name of the thin layer of the Earth that is made of soil? Pedosphere Lithosphere Stratosphere Hydrosphere The pedosphere interacts closely with the atmosphere, biosphere, hdrosphere, and lithosphere. true false Soil is typical made of different layers called Strata Humus Horizons Spheres Plants are normally found in O A B C O and A The correct order for the layers of the pedoshere is A,B,C,D, Bedrock O,A,B,C,Bedrock A,B,C,O,Bedrock O,A,B,Bedrock,C Soil is composed of Organic matter Minerals Rocks Both A and B Healthy soil in a combination of all the following but is mainly Water Eroded parent material Air Organic Matter How long does it take to make a good healthy soil? 1000 years 10000 years 100000 years Millions of years How are soil colours categorized? Soil sample test kit Munsell Book Soil sample colour chart Soil colour index What 4 things do plants require for growth? What does each provide? Be organized with your answer. How else can we distinguish between soil types other than colour? pH amount of moisture they can hold Humus percentage Porosity Size, shape, texture of peds all of the above Why is the pH of the soil important? What factor allows soil to hold more moisture? High porosity and low clay content Low porosity and high clay content Sandy soil with high porosity Low humus and low porosity What are the six main types of soil?