MCQ on Geological Time Scale (GTS)

MCQ on Geological Time Scale. The geological time scale is a chronological framework used by geologists to categorize and organize Earth’s history into distinct eras, periods, epochs, and ages. It provides a structured way to study and understand the vast expanse of geological time, helping scientists trace the evolution of Earth’s geological and biological processes.

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1. 
The Geological Time Scale is a system used by geologists and paleontologists to:

2. 
The largest division of geological time in the Geological Time Scale is called:

3. 
The current era in the Geological Time Scale is the:

4. 
The event that marks the boundary between the Mesozoic and Cenozoic Eras and is associated with the extinction of dinosaurs is called the:

5. 
The Paleozoic Era is characterized by the rise of which group of organisms that dominated the seas during this time?

6. 
The term "Cambrian Explosion" refers to:

7. 
The "Great Oxygenation Event" occurred during which era, leading to the increase of oxygen in the atmosphere?

8. 
The first multicellular organisms appeared during which eon of the Geological Time Scale?

9. 
The period known as the "Age of Reptiles" is part of the:

10. 
The longest eon in the Geological Time Scale is the:

11. 
The Quaternary Period is characterized by the presence of which type of mammals, including humans?

12. 
The process of using the principles of superposition and cross-cutting relationships to determine the relative ages of rocks and events is called:

13. 
The concept of "uniformitarianism," which proposes that geological processes occurring today have operated similarly throughout Earth's history, was popularized by:

14. 
The Precambrian Eon includes the vast majority of Earth's history, spanning from about 4.6 billion years ago to approximately:

15. 
The "Holocene Epoch," which is the current epoch in the Geological Time Scale, is characterized by:

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