How OLD IS THE EARTH?
A) 2021 years old
B) 4.6 Billion Years Old
C) 3.6 billion years old
D) 4.6 Million Years old
B) 4.6 Billion Years Old
What is the most accurate way to determine a fossils age?
RADIOMETRIC Dating
What are rock layers called?
strata
What 2 main requirements are typical for a fossil to form. (think environmental factors)
Lack of OXYGEN and RAPID BURIAL so they don't decay.
You will find the oldest layers at the bottom. Newer minerals and rock are piled on top and, over time, this creates distinct rock layers. This is called _______.
What is the Law of Superposition
Which Rock is OLDER?
ROCK A
The idea that rock layers at the bottom are oldest and the ones at the top are youngest
Law of Superposition
Bone or Shell are typically replaced with this during fossilization
Minerals
What is the correct order
(put OLDEST on BOTTOM)

A
D
B
C
E
Fossils that help scientists QUICKLY Identify the age of a fossil or surrounding soil when found
INDEX FOSSILS
Who is the Father of Modern Geology?
James Hutton
FOSSIL ON THE RIGHT IS CALLED ______ FOSSIL

TRACE
WHICH MAKES A GOOD INDEX FOSSIL?
Moth, Trilobite, or Shark tooth or NONE?
TRILOBITE. The one in the second layer from the top, shaped like three columns.
What is the most common cause of mass extinctions?
climate change
Traces of ancient living things
fossils
What is a scientist who studies fossils?
What is a paleontologist?
How many mass extinctions have there been?
What is 5?
What is the most famous mass extinction, and what caused it?
The extinction of the dinosaurs. The cause was an asteroid.
fossil record