Unveiling Soil Secrets Through Composition and Layers

In this video, Mohan learns from his Grandpa about the components of soil, including pebbles, sand, silt, clay, and humus. They conduct activities to observe soil composition by mixing soil with water and allowing it to settle, revealing different layers. Another activity demonstrates the presence of air and water in soil by observing water droplets and air bubbles. These experiments highlight the varying composition of soil and its ability to contain air and water.

What material is the flowerpot made of, according to Grandpa?

• Wood

• Clay

• Metal

• Plastic

Which of the following is NOT a component of soil mentioned by Grandpa?

• Humus

• Glass

• Sand

• Pebbles

What is the purpose of shaking the beaker in the soil composition activity?

• To heat the soil

• To mix the soil with water

• To dry the soil

• To remove air from the soil

What forms the bottom layer in the soil composition activity?

• Clay

• Sand

• Pebbles

• Humus

Why does humus float on water in the soil composition activity?

• It dissolves in water

• It is lighter than water

• It reacts with water

• It is heavier than water

Which component of soil is described as being lighter than water?

• Humus

• Clay

• Sand

• Pebbles

What does the presence of water droplets on the container lid indicate?

• Soil is frozen

• Soil is dry

• Soil contains water

• Soil is heated

What is the role of sunlight in the water content activity?

• To cool the soil

• To dry the soil

• To heat the soil

• To freeze the soil

What causes the formation of air bubbles when soil is added to water?

• Condensation

• Air trapped in soil

• Chemical reaction

• Evaporation

What does the activity with air bubbles demonstrate about soil?

• Soil contains air

• Soil is magnetic

• Soil is liquid

• Soil is solid