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What is Soil? Worksheet

This What is Soil? Worksheet asks 3rd grade students to name what soil is made of, identify its three layers from a reference box, and explain why humus matters, with an answer key.

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About this resource

Description

Soil looks like plain brown dirt until you learn what is actually in it. It is mostly tiny broken pieces of rock, mixed with humus from dead leaves and plants, plus the water and air that roots depend on. This What is Soil? Worksheet takes third graders through that recipe one ingredient at a time, then adds the three layers — topsoil, subsoil and bedrock — so students can say both what soil is made of and how it is arranged underground.

The page opens with a four-word word bank and four sentences to complete, each naming one thing soil is made of. A short reference box then describes the three soil layers, and three questions ask students to name the right layer from what they have just read. The page finishes with a written-explanation item about why humus matters to growing plants. Print it after a soil sample investigation, or use it on its own as the reading-and-writing half of an earth science lesson.

What’s Included

  • A printable page with eight soil items, plus a matching answer key
  • A word bank of four things that make up soil
  • Four fill-in sentences on soil composition
  • A reference box on topsoil, subsoil and bedrock, with three questions
  • One written-explanation item, and an original illustration

Three Reasons This Helps Kids

  • Naming the parts of soil turns a familiar material into something a child can describe scientifically.
  • Answering from a short reference box practises the read-then-retrieve move that science tests are built on.
  • The explanation item asks for reasoning in a full sentence, not just a label.

Ideas for Teachers and Parents

Pair this 3rd grade earth science worksheet with a real handful of soil and a hand lens, and ask students to point out the rock pieces and the bits of dead leaf before they write anything. Dig a small hole in a garden bed and see whether the colour changes with depth, which makes the topsoil and subsoil layers real rather than diagrammatic. The What is Soil? Worksheet also works as a review before a unit test, with the key on the back for self-checking.

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