layers of soil grade 4 worksheets

📚 Topic Summary

Soil isn't just dirt! It's made of layers, like a cake! These layers, called horizons, each have different things in them like rocks, minerals, and organic material (stuff from living things). Understanding these layers helps us know how plants grow and how the Earth works! Let's dive in!

🌱 Part A: Vocabulary

Match the word to its definition:

1. Topsoil
2. Subsoil
3. Bedrock
4. Humus
5. Horizon

Definitions:

1. Layer of soil
2. Solid rock beneath the soil
3. Decayed plant and animal matter
4. Layer rich in minerals below topsoil
5. The uppermost layer of soil

Match the terms with their descriptions.

✍️ Part B: Fill in the Blanks

Complete the sentences using the words from the word bank: topsoil, bedrock, humus, nutrients, layers.

1. Soil is made up of different __________.
2. __________ is the solid rock found beneath the soil.
3. __________ is dark, organic material in the soil.
4. __________ is the uppermost layer and is rich in __________.

🤔 Part C: Critical Thinking

Imagine you are a plant. Which layer of soil would you want to live in and why?