Question

G] Answer in brief: (any6]
(18M]
1. What is meant by a standard unit of measurement? Why is it necessary to
have standard units of measurement? Name the SI unit of length. Write its
symbol.
2. What is meant by (a) circular motion and (b) rotational motion? Give two
examples of circular motion and two examples of rotational motion,
3. How many types of joints are there? Explain each of them. Give one
example
4. Explain how a metal rim slightly smaller than a wooden wheel can be fixed
on it.
5. How are camels adapted to live in the desert?
6. State whether the statements given below are True or False:
1.
2.
3
A torch bulb is a luminous object.
Light travels in a straight line.
Image formed by a plane mirror is inverted.
Light gets reflected when it strikes a shiny surface.
Transparent substances reflect all the light falling on them.
All the shining bodies in the sky have their own light.
4.
5.
6.
7. Explain the adaptation of mountains region for plants life and animals life.
(Section -D]​

Answer 1

Answer:

I am tired

l will give the answer later.