Layers of the Earth
Fossil Record
Geologic Time Scale Eras
Vocab
100
This layer is the hottest and is primarily made of nickel and iron.
What is the inner core?
100
There is not a lot of fossil record evidence from this era of geologic time.
What is the Precambrian era?
100
The correct order of the eras in the Geologic Time Scale from oldest to newest.
A.) Cenozoic, Mesozoic, Paleozoic, Precambrian
B.) Paleozoic, Precambrian, Mesozoic, Cenozoic
C.) Precambrian, Paleozoic, Mesozoic, Cenozoic
D.) Precambrian, Mesozoic, Cenozoic, Paleozoic
What is C.) Precambrian, Paleozoic, Mesozoic, Cenozoic?
100
The solid center of the Earth.
What is the inner core?
200
The thinnest layer of the Earth.
What is the crust?
200
The type of rock that fossils are most commonly found in.
What are sedimentary rocks?
200
About how old the Earth is.
What is 4.6 billion years old?
200
The outermost layer of the Earth.
What is the crust?
300
The thickest layer of the Earth.
What is the mantle?
300
The oldest fossil according to the fossil record for "Outcrop 2" below is this creature.
What is Brachiopod?
300
The era in which humans came about.
A.) Precambrian
B.) Paleozoic
C.) Mesozoic
D.) Cenozoic
What is D.) Cenozoic?
300
Any preserved remains, impression, or trace of any once living thing from a past geological age.
What is a fossil?
400
The correct order of the layers of the Earth from outside to inside.
What is the crust, mantle, outer core, inner core?
400
The newest fossil according to the fossil record for "Outcrop 3" below is this creature.
What is Ammonite?
400
This era of geologic time accounts for about 88% of Earth's history.
What is the Precambrian era?
400
A process where heat is transferred by movement and energy (warm rises, cold sinks).
What are convection currents?
500
The layer where convection currents take place.
What is the mantle?
500
You can guess that the area of the picture below used to look like this according to the fossil record.
What is that the area used to likely be underwater due to the types of fossils shown being marine creatures?
500
During this Geologic Time Scale era, a large mass extinction known as the "The Great Dying" took place.
What is the Paleozoic era?
500
A group of fossils that helps provide information on the existence, diversity, and extinctions of life over time.
What is the fossil record?