Insights Static Quiz -147, 2018
Physical geography and Environment
INSIGHTS IAS QUIZ ON STATIC SYLLABUS - 2018
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Question 1 of 5
1. Question
Which of the following places witness highest tide in the world
Correct
Answer – A
- The highest tides in the world occur in the Bay of Fundy in Nova Scotia, Canada. The tidal bulge is 1,440 cm.
- Because there are two high tides and two low tides every day (roughly a 24 hour period); then a tide must come in within about a six hour period. As a rough estimate, the tide rises about 240 cm an hour (1,440 cm divided by 6 hours).
- Hence option A is correct.
Incorrect
Answer – A
- The highest tides in the world occur in the Bay of Fundy in Nova Scotia, Canada. The tidal bulge is 1,440 cm.
- Because there are two high tides and two low tides every day (roughly a 24 hour period); then a tide must come in within about a six hour period. As a rough estimate, the tide rises about 240 cm an hour (1,440 cm divided by 6 hours).
- Hence option A is correct.
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Question 2 of 5
2. Question
Which of the following factors can change enhance the height of tides
- Continental shelves
- Funnel shape of bays
Select the correct answer using codes below
Correct
Answer – C
- The tidal bulges on wide continental shelves, have greater height. When tidal bulges hit the mid-oceanic islands they become low. Hence statement 1 is correct.
- The shape of bays and estuaries along a coastline can also magnify the intensity of tides. Funnel-shaped bays greatly change tidal magnitudes. When the tide is channelled between islands or into bays and estuaries they are called tidal currents. Hence statement 2 is correct.
Incorrect
Answer – C
- The tidal bulges on wide continental shelves, have greater height. When tidal bulges hit the mid-oceanic islands they become low. Hence statement 1 is correct.
- The shape of bays and estuaries along a coastline can also magnify the intensity of tides. Funnel-shaped bays greatly change tidal magnitudes. When the tide is channelled between islands or into bays and estuaries they are called tidal currents. Hence statement 2 is correct.
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Question 3 of 5
3. Question
Consider the following statements about spring tides
- They occur on the day of either full moon or new moon
- They occur twice a month generally
Select the correct answer using codes below
Correct
Answer – C
- The position of both the sun and the moon in relation to the earth has direct bearing on tide height. When the sun, the moon and the earth are in a straight line, the height of the tide will be higher. These are called spring tides and they occur twice a month, one on full moon period and another during new moon period. Hence statements 1 and 2 correct.
Incorrect
Answer – C
- The position of both the sun and the moon in relation to the earth has direct bearing on tide height. When the sun, the moon and the earth are in a straight line, the height of the tide will be higher. These are called spring tides and they occur twice a month, one on full moon period and another during new moon period. Hence statements 1 and 2 correct.
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Question 4 of 5
4. Question
Which of the following forces is particularly significant in causing tides
Correct
Answer – A
- The moon’s gravitational pull to a great extent and to a lesser extent the sun’s gravitational pull, are the major causes for the occurrence of tides.
- Another factor is centrifugal force, which is the force that acts to counter balance the gravity.
- Together, the gravitational pull and the centrifugal force are responsible for creating the two major tidal bulges on the earth. On the surface of the earth, nearest the moon, pull or the attractive force of the moon is greater than the centrifugal force, and so there is a net force causing a bulge towards the moon.
- Hence option A is correct.
Incorrect
Answer – A
- The moon’s gravitational pull to a great extent and to a lesser extent the sun’s gravitational pull, are the major causes for the occurrence of tides.
- Another factor is centrifugal force, which is the force that acts to counter balance the gravity.
- Together, the gravitational pull and the centrifugal force are responsible for creating the two major tidal bulges on the earth. On the surface of the earth, nearest the moon, pull or the attractive force of the moon is greater than the centrifugal force, and so there is a net force causing a bulge towards the moon.
- Hence option A is correct.
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Question 5 of 5
5. Question
Consider the following statements about tides
- Tides occur exactly twice in 24 hours anywhere on the earth
- Surges are caused by atmospheric changes, not gravitational forces
Select the correct answer using codes below
Correct
Answer – B
- The periodical rise and fall of the sea level, once or twice a day, mainly due to the attraction of the sun and the moon, is called a tide. Hence statement 1 is incorrect
- Movement of water caused by meteorological effects (winds and atmospheric pressure changes) are called surges. Surges are not regular like tides. The study of tides is very complex, spatially and temporally, as it has great variations in frequency, magnitude and height. Hence statement 2 is correct
Incorrect
Answer – B
- The periodical rise and fall of the sea level, once or twice a day, mainly due to the attraction of the sun and the moon, is called a tide. Hence statement 1 is incorrect
- Movement of water caused by meteorological effects (winds and atmospheric pressure changes) are called surges. Surges are not regular like tides. The study of tides is very complex, spatially and temporally, as it has great variations in frequency, magnitude and height. Hence statement 2 is correct
