Question

SECTION II: UNDERSTANDING (16 marks)

3. Which type of soil can be used for growing the following crops? Why? (2 marks)

i) Wheat (ii) cotton

4. Write two differences between a convex and a concave lens. (2 marks)

5. Explain the phenomenon that you are noticing in the below picture. (2 marks)

6. The distance between two stations is 400 km. A train takes 8 hours to cover this distance. Calculate the speed

of the train. (2 marks)

7. What are the types of motion in each of the cases below? (2 marks)

(a) Soldiers in a march past

(b) Motion of the Earth around the Sun

8. Differentiate between Galvanisation and Crystallisation. (2 marks)

9. When baking soda is mixed with lemon juice, bubbles are formed with the evolution of a gas. What type of

change is it? Explain. (2 marks)

10. Explain any 4 uses or importance of soil.(2 marks)​

Answer 1

Answer:

3) Loamy soil

Loam is soil composed mostly of sand, silt, and a smaller amount of clay. By weight, its mineral composition is about 40–40–20% concentration of sand–silt–clay, respectively