Vocabulary
Rock Illustrations
Fossil and Rock Layers
5 Mass Exctinctions
Common Ancestry
100
the naturally preserved remains, imprints, or traces of organisms that lived long ago
A fossil.
100
Which Layer is the youngest?
3
100
This states that a crack or break in rock must be younger than the rock layer it cuts through
Crosscutting
100
Approximately how many years ago did the Triassic-Jurassic Extinction occur?
what is 200 million years ago
100
Are Bats and Butterflies Homologous or Analogous?
What is Analogous
200
the dying off of many different species of organisms over a short period in geologic time
Mass Extinction
200
Which rock layer in the diagram seems to be the oldest?
Layer A
200
If a fossil is found in a particular rock layer, what can we say about both the fossil and the rock layer?
The formed at the same time.
200
This extinction wiped out 96 percent of species?
What is the Permian-Triassic Extinction
200
What purpose did our appendix use to serve?
Help digest food
300
This states that younger rocks always lie above older rocks.
Law of Superposition
300
Which strata is the youngest?
What is 1
300
3 criteria for index fossils
1.Easily Recognizable
2. Widespread = The fossil must show up in each of the different outcrops (columns).
3. Short-Lived = Within each outcrop, the fossil can only appear in one layer (row).
300
What caused the Ordovician Extinction?
What is massive glaciation and drop in sea levels.
300
What are examples of vestigial structures in humans?
Appendix, tailbone, wisdom teeth, body hair, etc
400
a group of similar organisms that are able to reproduce
Species
400
Which letter represents cross-cutting relationships?
What is R
400
A fossil is found in a rock layer that is 5000 years old. How old might the fossil be?
Around 5000 years old
400
What survived across the planet following the Cretaceous-Paleogene Extinction?
What are mammals
400
Are Humans, Dogs, and Cats pelvis's Analogous or Homologous?
Homologous
500
Structures originated from a common ancestor or same origin
What is a Homologous Structure?
500
List the layers of rock from oldest to youngest.
B, E, C, D, A
500
What does a geologic column show us?
Which rock is younger and which rock is older
500
What did the Permian-Triassic extinction "pave the way" for?
What are dinosaurs
500
Are the hands of humans and the legs of dogs homologous or analogous
Homologous