Get all 1000+ ASVAB exam-like questions with our mobile apps!

ios_downloadandroid_download

More ASVAB Topics

ASVAB Full-length Test
Which of the following time periods is the longest?
Eon.
Era.
Age.
Period.
Detailed Explanation
In the geologic time scale, an eon encompasses 500 million years, whereas an era encompasses 100-150 million years. Periods and ages are much shorter, in the range of 1-10 million years.
Take more free practice tests for other ASVAB topics with our ASVAB practice tests now!