Q: What is matter?
A: Matter is anything that occupies space and has mass.
Q: How did ancient Indian Ayurveda classify physical matter?
A: Ayurveda used a system of 20 properties (guṇa) in 10 pairs of opposites to describe all physical matter.
Q: What are some examples of transparent materials?
A: Examples of transparent materials include glass, water, air, and cellophane paper.
Q: Why is water important for the functioning of our body?
A: Water is important because it can dissolve a large number of materials, which is crucial for many bodily functions.
Q: What is the difference between mass and volume?
A: Mass gives the quantity of matter, while volume is the space occupied by matter.
Q: How can you determine if a material is hard or soft?
A: You can try to compress or scratch the material. Materials that are easily compressed or scratched are soft, while those that are difficult to compress or scratch are hard.
Q: What is the importance of classifying materials?
A: Classification helps us study and observe patterns in the properties of things, making it easier to understand and use materials effectively.
Q: When was the earliest pottery found in the Indian subcontinent?
A: The earliest pottery found in the Indian subcontinent dates back to 7,000 to 8,000 years ago in the Ganga plains (Lahuradewa) and in Baluchistan (Mehrgarh).
Q: What is terracotta?
A: Terracotta is baked clay, often used in pottery and sculpture.
Q: Why are different materials used for making balls for various sports?
A: Different materials are used to achieve specific properties like bounce, durability, and performance required for each sport.
