Question

01- Fill in the blanks
D Si unit of length is
(5M
i)
To measure a curved line we need a.
The habitat of plants & animals that live on land are called
Iv)
The movement of marching sollders is
motion.
v)
Soll, water & air are the
factors of the habitat,
Q2:- Define the following:
Rectilinear motion
[3M)
Predators in): Stimuli
Q 3:- Answer the following-
ЗМ)
1) Why can a pace or a footstep not be used as a standard unit of length?
The height of a person is 165 ml. Express it into em & mm?
04 Differentiate
[AM]
1) Blouc & abiotic components
1) Habitat & adaptation​

Answer 1

Answer:

If we want to measure a curved line, we can't do it directly by using a metre scale, as we can't straighten the curved line.

For this, we can use a thread.

If we carefully move the thread along the curved line while keeping it stretched tightly, and then measure the used part of the thread on a metre scale, we can get to know the length of the curved line.

Join it may help you