Which one of the following is the continent with the highest mean elevation in the world?
Correct Answer:
(A)
Antarctica
Antarctica is the continent with the highest mean elevation in the world. It is situated around the South Pole. Average Elevation of continents is as follows:
Antarctica - 1846 meter
North America - 720 meter
South America - 554 meter
Asia - 923 meter
Europe - 302 meter
Australia - 330 meter
Ques:
22
In the given figure the physical areas marked with 1,2,3 and 4 are respectively –
Correct Answer:
(A)
Andes, Brazilion shield, Guiana highland and Amazon basin.
The marked area in South America respectively are – 1. Andes 2. Brazilian Shield 3. Guiana highland and 4. Amazon basin. Thus option (a) is correct.
Ques:
23
Which of the following countries is not located on the Continent of Africa?
Correct Answer:
(D)
Guyana
Gabon is a country located on the West coast of Central Africa. It is located on the Equator. Its capital and largest city is Libreville. Guinea is a west coastal country in West Africa formerly known as French Guinea. Conakry is its largest city and also its capital. It is the world's 2nd largest producer of bauxite and has rich deposits of diamonds and gold. The country was the core of the 2014 Ebola Outbreak. Guinea – Bissau is a country in West Africa. Bissau is its capital city. Guyana officially the Co-operative Republic of Guyana is a country in the northern mainland of South America. Guyana is the only South American nation in which English is the official language.
Ques:
24
Which one of the following Continents has the highest percentage of plains in its total area ?
Correct Answer:
(B)
Europe
Plains largely constitute Europe and South America however in terms of percentage Europe has the largest percentage of plains compared to its total area.
Ques:
25
Match List-I with list-II and choose the correct answer from the code given below –
List - I (Landform) List-II (Continent)
Aconcagua (i) Australia
Meseta (ii) Africa
Serengeti Plains (iii) Europe
Gibson desert (iv) South America
Code :
A B C D
Correct Answer:
(D)
(iv), (iii), (ii), (i)
The correct match is as follows:
Land form Continent
Aconcagua South America
Meseta Europe
Serengeti Plains Africa
Gibson desert Australia
Ques:
26
Read the following statement related to 'Earthquake shadow zone' and choose the correct option:
Statement I : The shadow zone of one earthquake is totally different from the shadow zone of another earthquake
Statement II : Seismometers record both 'P' and 'S' waves at any distance out of 105°
from earthquake's epicentre
Correct Answer:
(B)
Statement I is true, but Statement II is false
Earthquake waves get recorded is seismographs. However, there exist some specifi c areas where the waves are not reported. Such a zone is called the 'Shadowzone'. The study of different events reveals that for each earthquake, there exists an altogether different shadow zone. Also, seismometers record both 'P' and 'S' waves at any distance within 105o from earthquake's epicentre.
Ques:
27
The place on earth's surface which records the seismic waves first, is called
Correct Answer:
(B)
Epicentre
Earthquakes are vibrations of the Earth, caused by the rupture and sudden movement of rocks that have been strained beyond their elastic limits.
(a) Focus – The point of origin of an earthquake.
(b) Epicentre–The point of the Earth's surface which is
directly above the focus of an earthquake. Hence it is where seismic waves are recorded first.
(c) Seismosite is a scientific instrument which was earlier used to measure seismic activity.
Ques:
28
The ‘Ring of Fire’ is associated with
1. Earthquake 2. Volcanoes
3. Pacific Ocean 4. Forest Fires
Choose your answer with the help of codes given below :
Code :
Correct Answer:
(A)
1, 2 and 3
‘Rings of fire’ is a region in the Pacific Ocean influenced by volcanic activities and Earthquake. Approximately 90% of the world's earthquakes occur along the 'Ring of fire'. The region of ‘Rings of fire’ includes the vast seismic zone of Chile, California, Alaska, Japan, Philippines, New Zealand and part of Central Ocean. There are three main regions in the Ring of fire –
Intersection point of Ocean and land
New twisted mountainous terrain
Volcanic field
Ques:
29
Consider the following statements :
The Richter scale is a logarithmic scale and so an increase of 1 magnitude unit represents a factor of 10 in amplitude.
Each integer reading of the Richter scale has an energy 100 times than the previous integer reading.
Which of the statement(s) given above is/are correct?
Correct Answer:
(A)
1 only
The magnitude of the earthquake is measured on the Richter scale and intensity on Mercalli scale. In 1935, seismologist Charles Francis Richter of the California Institute of Technology developed the Richter magnitude scale. It is based on a logarithmic scale which is mentioned as 1-10 on the scale. Each number of seismographs represents 10 times amplitude, 32 times energy. A seismic wave of intensity 1 releases the energy of 6 ounces of TNT. Hence statement (1) is correct while statement (2) is wrong.
Ques:
30
Consider the following statement about earthquake –
Intensity of earthquake is measured on Mercalli Scale.
Earthquake’s magnitude is the measurement of energy released.
Magnitude of earthquake depends directly upon Amplitude of an earthquake waves.
Every integer on Richter Scale shows 100 times increase in energy released
Which of the statements are true?
Correct Answer:
(A)
1, 2 and 3
The intensity of an earthquake is measured by Mercalli scale. Hence, statement (1) is correct. The magnitude of earthquake is the measurement of energy released; thus statement (2) is correct. Richter scale has a shaking amplitude 10 times that of the previous integer and shows an increase of 32 times in energy. Energy equal to 6 ounces of TNT is released by an earthquake of a magnitude of 1. Hence statement (3) is correct but statement (4) is false.
