Fossils
Fossils are found most often in which type of rock?
Sedimentary
A cold period when glaciers covered the Earth.
What is the Ice Age?
What period is Pennsylvanian in
Paleozoic
Geologic time scale shows Earth's _____________
history
What era is the "Age of Reptiles"?
Mesozoic
The remains of an organism that were common and widespread but existed for only about 1 million years or less.
Index fossils
Approximately how old is earth?
4.6 billion years.
True or False: To determine the absolute date of an object you must compare one layer to another layer.
False
The largest division of the geologic time scale is the
Eon
What role did ice ages play during the Cenozoic Era?
Formed geological features visible today.
What type of organism parts are more likely to become a fossil?
Hard parts - like bone, teeth
Largest division of geologic time.
What is Eon?
An enormous mass of ice, moving over land.
What is a Glacier?
What is the smallest division of geologic time?
Epoch
The study of ________ helps scientists divide the geological time scale by providing evidence of past life forms.
Fossils
Which Era is called "middle life" and included dinosaurs?
Mesozoic
Which Era is known as early life?
Paleozoic Era
In what period did the first flowering plant evolve?
Cretaceous
What is MYA
Million years ago
What is the correct order of the geologic time scale from largest to smallest
Eon, Era, Period, Epoch
Which era are we currently living in?
Cenozoic
A marine arthropod that occurred abundantly during the Paleozoic era
Trilobite
The longest Era was ____________.
What is the Precambrian?
Some rocks were made smooth by wind blowing smaller rock particles across their surface.
What is abrasion?
What is the study of fossils called?
Palentology