Question

Q3 Read the passage given below carefully and answers the questions that

follow

An earthquake comes like a thief in the night, without warning. It was necessary,

therefore to invent instruments that neither slumbered nor slept. Some devices were

quite simple. One, for instance, consisted of rods of various lengths and thicknesses

which would stand up on end like ninepins. When a shock came it shook the rigid table

upon which these stood. If it were gentle, only the more unstable rods fell. If it were

severe, they all fell. Thus, the rods by falling and by the direction in which they fell,

recorded for the slumbering scientist, the strength of a shock that was too weak to

waken him and the direction from which it came. But, instruments far more delicate

than that were needed if any really serious advance was to be made.

The ideal to be aimed at was to devise an instrument that could record with a pen on

paper the movements, of the ground or of the table, as the quake passed by. While I

write my pen moves but the paper keeps still. With practice, no doubt, I could, in time,

learn to write by holding the pen still while the paper moved. That sounds a silly

suggestion, but that was precisely the idea adopted in some of the early instruments(seismometers) for recording earthquake waves. But when table, penholder and paper

are all moving how is it possible to write legibly? The key to a solution of that problem

lay in an everyday observation. Why does a person standing in a bus or train tend to fall

when a sudden start is made? It is because his feet moves on, but his head stays still.

QA-This passage says that early instruments for measuring earthquakes were- ( Choose

from the options given) 1

a) Faulty design

b) Expensive

c) Not sturdy

d) Not sensitive enough

B) Why was it necessary to invent instruments to observe an earthquake? 2

C) A simple device which consisted of rods that stood up on end like napkins was

replaced by a more sophisticated one. Why? 2

D) Give an appropriate title for this passage.

E) What idea did early seismometers adopt to record the earthquake?​

Answer 1

Answer:

QA- d) Not Sensitive enough

QB- Because an earthquake comes like a theif in the night without warning

QC- because it was not sensitive enough as needed

QD- Earthquake- the sudden striker

QE- It was adopted by an idea that the pen remain still and the paper moves and it works like how we write with pen

HOPE THIS HELPED.......

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Answer 2

Answer:

A.) Faulty design

B.)it is necessary to invent instruments to observe an earthquake as it was not fell by a normal person .Animals can only fell an earthquake.

C.)you can do it yourself. But from my perspective the title should be:DEVASTATING NATURAL DISASTER.

D.)I think Animal behaviour can help to adopt to record the earthquake.