Geological Time Scale
Unit Review
Name: ___________________________________
Learning Goals:
1. I will be able to distinguish between relative and absolute time
2. I will be able to explain the significance of the time scale with respect to the length of time that organisms
have been around
3. I will be able to describe the events in Earth’s history using the Geological Time scale
Remember to watch the videos I have put on my website at
www.beckersciences.weebly.com (on Earth Science page) as a study
resource.
Learning Goal #1: I will be able to distinguish between relative and absolute time
1.
Define the following types of time:
a. Interval time:
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b. Sequential time:
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c. Absolute (numeric) time:
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2. What are the three main eons of time?
a. _________________________________________
b. _________________________________________
c. _________________________________________
3. What are the four main eras of time?
a. _________________________________________
b. _________________________________________
c. _________________________________________
d. _________________________________________
Learning Goal #2: I will be able to explain the significance of the time scale with respect to the length of time that
organisms have been around
1.
How long has earth been a planet? _______________________________
2. How long have organisms been on earth? ____________________________________
3. How long of time was earth just volcanoes, rocks, and gasses? __________________________________
4. What do you notice about the geological time scale with respect to the development of organisms and the
complexity of organisms?
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5. What does this constant change mean with respect to our current and future organisms? Has Earth reached a
climax community or are there future changes coming? What do you think they might be? Why?
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Learning Goal #3: I will be able to describe the events in Earth’s history using the Geological Time scale
1. What does the below comic mean with relation to Geological Time Scale?
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2. What is this comic referring to, and what really happened and when?
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3. What is this comic referring to, and what really happened and when?
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4. Complete the below chart outlining what some of the big events in geological time have been
Eon
Phanerozoic
Era
Cenozoic
Period
Quaternary
Tertiary
Mesozoic
Cretaceous
Jurassic
Triassic
Paleozoic
Permian
Devonian
Cambrian
Protozeroic
Archean
Major Events