Question

Answer the following questions briefly

Q1. Write two examples of slow changes.

Q2. Is it possible to obtain wood from sawdust?

Q3 .Think of some changes that happen in our body.

Q4 A small size boat is made by folding a paper. Can this change be reversed? Think and write one more example of similar type.

Q5. Your brother accidently dropped your favorite pencil box and broke it. This is a change you did not want. Can you reverse this change?

Answer 1

Answer:

1. Example: Rusting of iron.(i only know 1 example)
2. no,we can't because Sawdust (or wood shavings) is a by-product or waste product of woodworking operations such as sawing, milling, planing, routing, drilling and sanding. Sawdust is the main component of particleboard
3. The changes that happening in our body are: (a) Our nails grow. (c) We grow taller. (4) Our weight increases
4. Yes, it can be reversed. Another example is ball made by folding paper.
5. No, this change is not reversible as broken pieces cannot be fixed.