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- 1. Multiple Choice
What is one of four long periods of geologic time from Precambrian to the present.
geologic time scale
era
period
epoch
- 2. Multiple Choice
what is a model scientists use to describe the timing of events and the relationships between those events in earth’s history.
geologic time scale
era
period
epoch
- 3. Multiple Choice
geologic time intervals that eras are divided into.
geologic time scale
era
period
epoch
- 4. Multiple Choice
a division of geologic time; a subdivision of a period. Shortest length of time.
geologic time scale
era
period
epoch
- 5. Multiple Choice
What it is called when minerals replace the remains and they become rock; things like wood.
Petrified
Mold
Cast
Trace Fossil
- 6. Multiple Choice
when the shell remains and the contents dissolve
Petrified
Mold
Cast
Index
Trace Fossil
- 7. Multiple Choice
when the mold becomes filled with minerals that are not a part of the original organism.
Petrified
Mold
Cast
Index
Trace Fossil
- 8. Multiple Choice
a fossil found in a narrow time range but widely distributed around the earth; used to date rock layers.
Petrified
Mold
Cast
Index
- 9. Multiple Choice
fossilized mark that is formed in soft sediment by the movement or actions of an animal.
Petrified
Mold
Cast
Trace Fossil
- 10. Multiple Choice
What Era were mammals first seen?
Precambrian
Paleozoic
Mesozoic
Cenozoic
- 11. Multiple Choice
According to paleontologists, how old is the Earth?
3.5 Billion Years Old
543 Million Years Old
57 Million Years Old
4.6 Billion Years Old
- 12. Multiple Choice
looks at where the fossil is located to determine its age relative to other fossils.
Relative Dating
Absolute Dating
- 13. Multiple Choice
Uses radioactive elements near the fossils to determine the actual age of the fossils.
Relative Dating
Absolute Dating
Radiometric Dating
- 14. Multiple Choice
Look at the layers of sedimentary rock. Which layer of sedimentary rock is oldest?
Q
R
S
T
U
- 15. Multiple Choice
How would the world be different without fossils?
We would know that there were dinosaurs.
We would not know any of the extinct animals and plants of the past.
We would know every animal and plant that has ever survived.
The fossil record would be complete.
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