Eras and Geological Time CDS Questions

CDS Physical Geography

Eras and Geological Time MCQ Questions


1.
The age of the Earth is approximately:
A.
3.8 billion years
B.
4.6 million years
C.
2.5 billion years
D.
4.54 billion years
😑 View Answer Rough Work Error
ANSWER :
D. 4.54 billion years
2.
The largest division of geological time is known as:
A.
Epoch
B.
Period
C.
Eon
D.
Era
😑 View Answer Rough Work Error
ANSWER :
C. Eon
3.
The correct hierarchical order of geological time units from largest to smallest is:
A.
Era → Eon → Period → Epoch → Age
B.
Age → Epoch → Period → Era → Eon
C.
Period → Era → Eon → Epoch → Age
D.
Eon → Era → Period → Epoch → Age
😑 View Answer Rough Work Error
ANSWER :
D. Eon → Era → Period → Epoch → Age
4.
How many eons are there in the geological time scale?
A.
Three
B.
Five
C.
Four
D.
Six
😑 View Answer Rough Work Error
ANSWER :
C. Four
5.
Which eon represents approximately 88% of Earth's total geological history?
A.
Phanerozoic
B.
Paleozoic
C.
Cenozoic
D.
Precambrian (Hadean + Archean + Proterozoic)
😑 View Answer Rough Work Error
ANSWER :
D. Precambrian (Hadean + Archean + Proterozoic)
6.
The word 'Phanerozoic' literally means:
A.
Hidden life
B.
Middle life
C.
Ancient life
D.
Visible life
😑 View Answer Rough Work Error
ANSWER :
D. Visible life