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Third Grade (Grade 3) Soil Questions

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Grade 3 Soil
Why is soil so important?
  1. Provides food and support for plants
  2. Eaten by animals
  3. Eaten by people
  4. Keeps Earth clean
Grade 3 Soil
Soil is formed when                 are broken down by weather, water and living things over long periods of time.
  1. trees
  2. rocks
  3. insects
  4. animals
Grade 3 Soil
What is the name of the loose material that covers most of Earth's surface?
  1. soil
  2. lava
  3. clouds
  4. sheets
Grade 3 Soil
What are minerals, weathered rock, and other things mixed together?
  1. Fossils
  2. Rocks
  3. Soil
Grade 3 Soil
What are the 3 major layers of soil? Select 3.
  1. Subsoil
  2. Bottomsoil
  3. Grainsoil
  4. Topsoil
  5. Bedrock
Grade 3 Soil
          Topsoil           is the upper layer of soil on the surface of Earth that is dark in color and has the smallest particles.
Grade 3 Soil
A soil's                 is determined by what type of materials are in it.
  1. shape
  2. color
  3. size
Grade 3 Soil
Which of these layers of soil has the most humus?
  1. topsoil
  2. subsoil
  3. bedrock
  4. clay
Grade 3 Soil
Soil is
  1. any type of dirt and rocks.
  2. a mixture of tiny rock particles, minerals, and decayed plant and animal materials.
  3. the same as the ground.
Grade 3 Soil
What kind of soil holds the most water?
  1. sandy soil
  2. clay
  3. rocks
  4. plants
Grade 3 Soil
The texture of a soil is an important measurement to identify how much water it can hold.
  1. True
  2. False
Grade 3 Soil
Soil is composed of air, water, minerals and other organic matter.
  1. True
  2. False
Grade 3 Soil
Living organisms like insects and bacteria contribute in the formation of soils.
  1. True
  2. False
Grade 3 Soil
Humus made up of decayed matter that was once alive.
  1. True
  2. False
Grade 3 Soil
The top layer of the soil is called topsoil.
  1. True
  2. False
Grade 3 Soil
The bottom layer of the soil is called the bedrock.
  1. True
  2. False
Grade 3 Soil
            Nutrients             are a part of the soil that helps plants grow and stay healthy.
Grade 3 Soil
          Subsoil           is the middle soil layer that has larger particles than topsoil and is lighter in color.
Grade 3 Soil
             Solid rock              is the deepest soil layer and has the biggest particles and is lightest in color.
Grade 3 Soil
Give three reasons why soil is important.
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