Geologic Time Scale Lab Template (Page 3 of 3) in pdf

Geologic Time Scale Lab Template Page 3

Analysis:

1. How many years does your tape-time scale represent? ___________________

2. The largest sections of geologic time are called ________________. List them in order from

youngest to oldest.

3. The largest sections are broken up into subsections called ________________. List them in

order from youngest to oldest.

4. By far, the longest geologic time is _________________________________.

5. Which era is longest? _______________________ The shortest? _____________

6. In which eras and periods did dinosaurs, mammals, flowering plants and birds appear on

Earth?

7. Which lived on Earth the longer time, dinosaurs or mammals? Calculate the range of time for

each.

8. Why would it be hard to outline the history of the United States on the geologic scale?

9. Why is it impossible for a cat fossil to be found in the same sedimentary rock layer as a

dinosaur fossil?

10. Were humans around during the time of the dinosaurs? Explain.

11. How much of the tape has man been around? (use a percentage).

12. How much of earth’s existence will you see in your lifetime? (use a percentage).

Geologic Time Scale Lab Template Page 3