Measurements Worksheet-1

Measurements Worksheet-1

1. On a hill 1000 m high, the atmospheric pressure will be :

(a) 76 cm of mercury

(b) more than 76 cm of mercury

(c) less than 76 cm of mercury

(d) none of these

2. At a given place the barometer reads 72 cm and weather is fair for two days. This implies that the given place is :

(a) at sea level                               (b) on some hill

(c) below the sea level                 (d) none of these

3. At a given place a barometer reads 76 cm of mercury when its tube is absolutely vertical. When the tube is tilted, reading of barometer will be :

(a) more than 76 cm                    (b) 76 cm

(c) less than 76 cm                       (d) none of these

4. The method used to find very large distance is called :

(a) hexagonal method                 (b) triangulation method

(c) rectangular method               (d) none of these

5. The device used to measure atmospheric pressure is called :

(a) Calorimeter                             (b) Ammeter

(c) Voltmeter                                 (d) Barometer

6. The liquid used in cistern barometer is :

(a) glycerin        (b) water            (c) mercury       (d) alcohol

7. The minimum number of reference points required to find the distance of a distant object in triangulation method should be :

(a) one                (b) two               (c) three             (d) four

8. A scale is always chosen for the distance between two given reference points in a triangulation method because

(a) it is a convention to do so

(b) it makes calculations easy

(c) it is not possible to draw large distance on paper

(d) None of these.

9. Triangulation method of measuring distance is not used while measuring :

(a) length of a hall                        (b) width of a river   

(c) height of a tall tree                 (d) height of a hill

10. Which is not a correct statement, when mercury is used as a barometric liquid?

(a) It does not stick to the walls of glass tube

(b) It exerts maximum pressure on account of its high density

(c) It can be easily obtained in pure state

(d) It vaporizes under vacuum conditions

11. On a particular place, if the atmospheric pressure decreases without any change in temperature, it implies :

(a) air is getting dry

(b) water vapors in air is increasing

(c) nitrogen in air is increasing

(d) carbon dioxide in air is increasing

12. At a given place the barometric height falls suddenly and the air is dry. The weather forecast can be :

(a) dust storm                               (b) rain storm

(c) gentle breeze                           (d) mild drizzle

13. At a given place the barometric pressure rises suddenly. The weather forecast is :

(a) dry weather

(b) rain

(c) anticyclonic weather with strong winds

(d) fair weather

Answer Key:

1. (c)
2. (b)
3. (b)
4. (b)
5. (d)
6. (c)
7. (b)
8. (c)
9. (a)
10. (d)
11. (b)
12. (a)
13. (c)