Examining The Soil After Returning To School in Soil – Our Life – Class 7 Science Experiment

Chapter Name: Soil – Our Life

Activity Name: Examining The Soil After Returning To School in Soil – Our Life

Activity Description:

In this activity, students will examine several soil samples brought to the class and identify various properties of soil based on provided guidelines. The objective is to enhance their understanding of soil characteristics and learn to observe and analyze different soil types.

Required Items:

• Different soil samples (collected from various locations)
• Magnifying glass or microscope (optional)
• A table describing the properties of soil to be observed

Step by Step Procedure:

1. Gather the different soil samples brought by the students to the class.
2. Place each soil sample on a flat surface or in separate containers for examination.
3. Use a magnifying glass or microscope if available to closely observe the soil texture, color, and particle sizes. (Optional)
4. Compare the properties of each soil sample with the provided table of soil properties.
5. Note down the observations for each sample in a systematic manner.

Experiment Observations:

1. Soil Texture: Sandy, loamy, clayey, or a combination.
2. Soil Color: Dark brown, reddish, black, yellowish, etc.
3. Particle Sizes: Presence of large particles (sand), medium-sized particles (silt), and small particles (clay).
4. Moisture Content: Dry, moist, or wet.
5. Organic Matter: Presence of leaves, twigs, decomposed plant material, etc.
6. pH Level: Acidic, neutral, or alkaline.

Precautions:

1. Handle soil samples with care to avoid contamination.
2. Wear gloves while handling soil, especially if there are concerns about potential pollutants.
3. Wash hands thoroughly after the experiment.
4. Use a clean magnifying glass or microscope if observing soil particles closely.

Lesson Learnt from Experiment:

Through this experiment, students will learn to identify and differentiate various properties of soil, including texture, color, particle sizes, moisture content, organic matter, and pH level. They will understand the significance of these properties in determining the soil’s fertility, suitability for different crops, and potential environmental impact.