MCQ on Geological Time Scale with Answers (PDF)

The Geological Time Scale (GTS) is a system used by geologists and paleontologists to describe the timing and relationships of events that have occurred throughout Earth’s history. It divides Earth’s history into various intervals based on significant geological and biological events, including the formation of rocks, major extinctions, and the appearance of new species. The GTS is typically divided into eons, eras, periods, epochs, and ages, providing a framework for understanding the evolution of life and the planet’s changing environments. This is an MCQ on Geological Time Scale with Answers. You can download the quiz as PDF from the results page.

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1. 
What is the longest division of geological time?

2. 
Which eon is known as the "Age of Reptiles"?

3. 
Which era is characterized by the dominance of mammals?

4. 
During which period did the first land plants appear?

5. 
What significant event marks the boundary between the Paleozoic and Mesozoic eras?

6. 
Which epoch is known for the development of modern humans?

7. 
What is the main source of evidence used to construct the Geological Time Scale?

8. 
The Triassic, Jurassic, and Cretaceous periods are part of which era?

9. 
Which event is associated with the end of the Cretaceous period?

10. 
What major geological event is marked by the Cambrian explosion?

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mcq on geological time scale




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