Question

Q 6:

Arrange the following lengths in their increasing magnitude:

2 metre, 2400 centimetre,10000 millimetre, .02 km

Ans: ______________________________________.

Q 7:

While measuring the length of a knitting needle, the reading of the

scale at one end is 3.0 cm and at the other end is 33.1 cm. What is the

length of the needle?

Q8: Why are hand span and cubit not used as standard units?

Q9: Convert:

1. 142cm = __________mm.

2. 5.4 km =_______ m.

3. 7.5 m =_________ cm.

Q10: Name the suitable measuring device you would choose to

measure

1. the size of your chest.

2. the length of a piece of cloth.

3. the length of a line segment.

4. the girth of a tree.

Q11:

What happens when the south poles of two magnets are brought

together?​

Answer 1

Answer:

Question: 06

2000<10000<24000<200000

Question: 07

The length of the needle = 33.1 cm – 3.0 cm = 30.1 cm

Question: 08

Hand span and cubit are not used as standard units of length because their sizes vary from person to person. So, two different persons may give different measurements for the same length, which is not desirable for a standard unit.

Question: 09

142 centimeters (cm)  =  1420 millimeters (mm)

5.4 kilometre (km) = 5400 metre (m)

7.5 metre (m) = 750 centimetres (c)

Question: 10

cant do

sorry

Question: 11

The other end is called the south pole. When two magnets are brought together, the opposite poles will attract one another, but the like poles will repel one another. This is similar to electric charges. Like charges repel, and unlike charges attract.