Yes, some materials can be scratched more easily than others due to differences in hardness. Softer materials, like plastic or wood, are more susceptible to scratches, while harder materials, like metal or glass, resist scratching better.
Category: Class 6 Science
NCERT Solutions and Important Questions for class 6 Science for CBSE exams 2020-2021.
Discussion Forum Latest Questions
Ghulan, Sheeta, and Sara chose their hiding spots based on visibility. Ghulan hid behind a wall for complete concealment, Sheeta used a big tree for cover and Sara relied on the frosted glass to obscure her outline.
No, Sheeta’s brother cannot see through a closed wooden window. Wood is an opaque material, preventing light from passing through. This means he cannot view Sheeta, Ghulan or Sara hiding outside.
Yes, water is transparent, allowing light to pass through easily. It can be made opaque by adding substances like milk, mud or paint, which scatter light and prevent visibility through the liquid.
Water is essential for our body’s functioning because it acts as a solvent, dissolving various substances like salts, sugars and nutrients. This property facilitates chemical reactions and nutrient transport, vital for maintaining health.