Presentation on theme: "Andrea Williams 3rd Grade Hillpoint Elementary School"— Presentation transcript:
1Andrea Williams 3rd Grade Hillpoint Elementary School Soil VocabularyAndrea Williams3rd GradeHillpoint Elementary School
2Soil! A natural resource found in our own backyard!! Soil is the loose material in which plants can grow in the upper layer of Earth. It is made up of rock, humus, air, and water.Soil is made up of 5 important components and has 3 layers!
3The 5 Components of SoilRead these with me!HumusSandSiltClayRock
4HumusThis is decayed (rotten, rotting) plant and animal matter in the soil. It provides nutrients to the soil.**Do you remember where it can be found?***How do you think humus is formed?Click on the mushroom to see the answer.Back
5Sand Sand is made up of small grains of weathered rock. DOES NOT hold water well!Few nutrients
6Made up of very small pieces of broken rock. Sand > Silt > Clay
7ClayCan be red or yellow!Holds water well!Contains nutrients!Back
83 Layers of Soil!Read these with me!TopsoilSubsoilBedrock
9Topsoil This is the top layer. It is where animals live and plants grow.It is a mixture of humus and rock fragments.It is the best layer for growing plants!Back
10Not as good for growing plants SubsoilMade up mostly of clayUnder the topsoilNot as good for growing plants
11BedrockThis is the third and bottom layer of soil. It is under the subsoil. It is made up of weathered rock and solid rock. The worst part of soil for plant growth.
12NutrientsThese are the materials that plants and animals need to grow. Do you remember where they can be found in soil? What layer? Check here Which components? Check here
13Weathering (breaks down) When rocks and other materials on the Earth’s surface are broken down into smaller pieces by weather, water, and living things.Beach in Corolla, N.C
14Weathering of the rocks and stumps in Corolla, N.C.
15Erosion (moves it)This is a force that gradually wears away soil and its nutrients. Can be caused by natural elements such as wind, water, and ice. This is because of the flow due to gravity.*Check out this experiment on erosion.Beach in Corolla, N.C
16Some more pictures of Erosion! Beach in Corolla, N.C.