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Third Grade (Grade 3) Rocks Questions

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Grade 3 Rocks
Soil is
  1. dirt and rocks
  2. a mixture of tiny rock particles, minerals, and decayed plant and animal materials.
  3. ground
Grade 3 Rocks
What kind of soil is most likely found in the desert?
  1. dark, damp soil
  2. dry, sandy soil
  3. sticky, red soil
  4. think, muddy soil
Grade 3 Rocks
Which is the top layer of soil?
  1. topsoil
  2. subsoil
  3. bedrock
  4. humus
Grade 3 Rocks
Which of these layers of soil has the most humus?
  1. topsoil
  2. subsoil
  3. bedrock
  4. clay
Grade 3 Rocks
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 Rocks
What is the name of the loose material that covers most of Earth's surface?
  1. soil
  2. lava
  3. rocks
  4. sheets
Grade 3 Rocks
                has small grains and holds very little water.
  1. Sand
  2. Clay
  3. Rocks
Grade 3 Rocks
                has the smallest grains and holds a lot of water.
  1. Salt
  2. Sand
  3. Clay
Grade 3 Rocks
Why is soil so important?
  1. Provides food and support for plants
  2. Eaten by animals
  3. Eaten by people
  4. Keeps the earth clean
Grade 3 Rocks
          Igneous          rock forms when magma and lava cools and hardens
Grade 3 Rocks
              Sedimentary              rock forms from layers of sediment or tiny bits of broken down rock or fossils
Grade 3 Rocks
              Metamorphic              rock that has been changed by heating and squeezing
Grade 3 Rocks
What are the 3 layers of soil?
  1. Subsoil
  2. Bottomsoil
  3. Grainsoil
  4. Topsoil
  5. Bedrock
Grade 3 Rocks
What are minerals, weathered rock, and other things mixed together?
  1. Fossils
  2. Rocks
  3. Soil
Grade 3 Rocks
       Rock        a nonliving material made up of one or more minerals
Grade 3 Rocks
A soil's               is determined by what type of materials are in it.
  1. Shape
  2. Color
  3. Size
Grade 3 Rocks
The three types of rocks are called           igneous          ,               metamorphic              , and               sedimentary              .

Rocks are made up of            minerals           .

Metamorphic rocks are formed by lots of         heat          and            pressure           .

I can find rocks            anywhere           .

              Sedimentary               rocks change to               metamorphic               rocks when under heat and pressure.
Grade 3 Rocks
          topsoil          is the first layer of soil on the surface of the Earth that is darker in color and has the smallest particles
Grade 3 Rocks
            Nutrients             is a part of the soil that helps plants grow and stay healthy.
Grade 3 Rocks
          subsoil          is the soil layer that is in between with bigger particles than topsoil and lighter in color
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