Question

1) Why handspan cannot be used as a standard unit of length measurement?

2) Clouds and rains are moving yet they are non-living. Elaborate.

3) All oscillatory motions are periodic motions. Explain.

4)Differentiate between living things and non-living things.

5)Describe any three types of motions
with examples.

6) Describe an activity to show that light travels in a straight line.​

Answer 1

Answer:

ans1. footsteps or hand span of two persons are used to measure the length respectively, then the two distances may not be equal.

Answer 2

refer the attachment

hope it helps you