Download Evolution _2 Relative Dating

Evolution
a change in a species over
time
There are many types of evidence that
support the theory of evolution
Fossil Evidence:
Relative Dating:
Relative Dating:

compares the rock
layers above and
below the fossil

Layers of
sedimentary rock
toward the bottom
are older

those toward the top
are younger.
Which layer is older?
C
B
A
Which layer is older?
Which Layer is younger?
Relative time is recorded in rocks.
Each of these rock
layers represents a
period of time in
Earth's history, so the
entire sequence of layers
is another timeline.
As more and more
layers are deposited,
the older rock layers
end up at the bottom
of the sequence and
the newer ones toward
the top.
The arrow shows the
relative order of the
rock layers from
earliest to most recent.
Evidence of the events in
Earth's history is found within
the rocks.
a.) Brachiopod
b.) Eurypterid
c.) Trilobite
d.) Ammonite