Origin & Geological History of Earth MCQs with Explanations
This covers the vast Geological Time Scale. It tests the sequence of mountain-building phases (orogenies), evolutionary milestones, tectonic splits, and the specific geological eras that formed the Indian subcontinent's rocks.
Which of the following scholar has suggested that the Earth has originated from the gases and the dust particles–
Correct Answer:
(D)
O. Schmidt
James Jeans is related to the tidal hypothesis of the origin of Earth. F. Hoyal and Littleton presented Nova hypothesis and Otto Schmidt gave the hypothesis of gas and dust for the genesis of Earth. According to this hypothesis, large quantities of gas and dust particles captured by the gravitational force of the sun formed the Earth.
Ques: 2
Which of the following Method is used to determine the age of the Earth –
Correct Answer:
(C) Uranium dating
The uranium dating method is used for determining the age of Earth.
Ques: 3
Great Ice-Age is related to :
Correct Answer:
(A) Pleistocene
The Pleistocene Epoch was the time during which extensive ice sheets and other glaciers formed on the landmass. This time period has been informally referred to as the “Great Ice Age” and began about one million years ago or more.
Ques: 4
Which of the following periods has generally been considered to be the 'Little Ice Age'?
Correct Answer:
(C) 1650 A.D. - 1870 A.D.
Little Ice Age is a period between 1300 A.D. to 1870 A.D. during which Europe and North America were subjected to much colder winter than during the 20th century. Thus (c) is the correct option.
Ques: 5
What was the period of the Dinosaurs?
Correct Answer:
(B) Eighteen crore years ago
The time of existence of dinosaurs is estimated 20.8 Crore years ago and ended by 14.4 crore year ago. Its remains were found at Rahioli in Kheda district of Gujarat and Barashimla hills of Jabalpur M.P. Thus, the correct answer is option (b).
Ques: 6
Consider the following events.
First reptiles
First insects
Shelled animals
First mammals
Arrange the above events in Chronological order of their origin on the earth and select the correct answer from the codes given below :
Code :
Correct Answer:
(C) 3 2 1 4
The right chronology is –
(1) Shelled Animals
(2) First insects
(3) First reptiles
(4) First Mammals.
Ques: 7
Continents have drifted apart because of-
Correct Answer:
(B) Tectonic activities
Continents rest on massive slabs of rocks called tectonic plates. These plates are always moving and interacting in a process called Plate tectonic activity. Through these tectonic activities, continents shift position on Earth’s surface. By about 175 million years ago the Pangea (the Supercontinent) landmass began breaking up due to continental drift, theory. Slowly it separated in pieces and assumed their position as the continent we recognize today.
Ques: 8
India was the part of ancient Gondwana land Supercontinent. It includes the following landmass of the present :
Correct Answer:
(D)
All of above
In Carboniferous period, the whole land mass on the Earth was unified and was named as Pangea. This Pangea Supercontinent was surrounded by a super-ocean which was named ‘Panthalassa’ by Wegener. Due to the process of continental drift, the Pangea split into a northern most and southern most supercontinent. The northernmost landmass was known as Laurasia. The southernmost supercontinent was known as Gondwana land which split into South-America, Australia, Africa, Madagascar, Antarctica and Peninsular India.
Ques: 9
On the earth, originally, there was only one huge landmass which is known as –
Correct Answer:
(B) Pangea
Originally, the huge landmass on earth was unified and known as 'Pangea'. Pangaea was a supercontinent.
Ques: 10
Which one of the following continents was not a part of Gondwana Land?
Correct Answer:
(A) North America
Gondwana included most of the landmasses of today, Southern Hemisphere including Antarctica, Southern America, Africa, Madagascar, Australia continent as well as Arabian Peninsula and Indian Subcontinent. North America is not a part of Gondwana land.
Ques: 11
Folding is the result of-
Correct Answer:
(C) Orogenic force
The Earth’s surface experiences different types of forces. The orogenic force takes millions of years to build a mountain from plain and sea bed. These forces due to the interaction between tectonic plates, crumpled and pushed upward to form mountain range. Thus, folding is the result of orogenic force.