| Fossils | Relative Age Dating | Radiometric Dating | Natural Selection | Geologic Time |
| 10 | 10 | 10 | 10 | 10 |
| 20 | 20 | 20 | 20 | 20 |
| 30 | 30 | 30 | 30 | 30 |
| 40 | 40 | 40 | 40 | 40 |
| 50 | 50 | 50 | 50 | 50 |
| Final Question | ||||
What type of scientist studies fossils and reconstructs the appearance of plants and animals?
What type of scientist studies fossils and reconstructs the appearance of plants and animals?
Paleotologist
An insect trapped in amber is an example of what type of fossil?
An insect trapped in amber is an example of what type of fossil?
Original remains
What do you call a specific fossil found only in a particular type of rock, in many places worldwide?
What do you call a specific fossil found only in a particular type of rock, in many places worldwide?
Index fossil
Footprints and worm trails are examples of what type of fossil?
Footprints and worm trails are examples of what type of fossil?
Trace fossil
What type of fossil is made from a thin film of carbon atoms and molecules?
What type of fossil is made from a thin film of carbon atoms and molecules?
Carbonaceous film fossil
The principle that the oldest rocks are on the bottom of an undisturbed bed of sedimentary rock layers.
The principle that the oldest rocks are on the bottom of an undisturbed bed of sedimentary rock layers.
Principle of Superposition
What are gaps in the rock record called?
What are gaps in the rock record called?
Unconformities
Matching rock layers in two different areas is called....
Matching rock layers in two different areas is called....
Correlation
What is a common cause of gaps in the rock record?
What is a common cause of gaps in the rock record?
Erosion
When rock layers are tilted and younger sediment layers are deposited on top, this is called...
When rock layers are tilted and younger sediment layers are deposited on top, this is called...
Angular Unconformity
The time it takes for half of the atoms in an isotope to decay is called...
The time it takes for half of the atoms in an isotope to decay is called...
Half-life
Using the decay rate of carbon to determine the absolute age is called...
Using the decay rate of carbon to determine the absolute age is called...
Carbon-14 dating
What is the principle that states the Earth's processes occurring today are similar to those that occurred in the past?
What is the principle that states the Earth's processes occurring today are similar to those that occurred in the past?
Uniformitarianism
What is the term for the age of a rock or other object in years?
What is the term for the age of a rock or other object in years?
Absolute age
How old is the Earth?
How old is the Earth?
4.5 billion years
If two organisms can reproduce, they are members of the same...
If two organisms can reproduce, they are members of the same...
species
What is the process by which organisms with characteristics suited tot he environment survive and reproduce?
What is the process by which organisms with characteristics suited tot he environment survive and reproduce?
Natural selection
Large scale environmental changes such as temperature and climate are often caused by...
Large scale environmental changes such as temperature and climate are often caused by...
Plate tectonics
What needed to happen for cyanobacteria and green algae to evolve into more complex life forms?
What needed to happen for cyanobacteria and green algae to evolve into more complex life forms?
Sufficient oxygen in atmosphere
A species must ___________ in response to a changing environment, or it will become __________.
A species must ___________ in response to a changing environment, or it will become __________.
evolve, extinct
What is the largest division in the geologic time scale?
What is the largest division in the geologic time scale?
Eon
Humans appeared during which Era?
Humans appeared during which Era?
Cenozoic Era
The Mesozoic Era was known as the Age of the ___________.
The Mesozoic Era was known as the Age of the ___________.
Dinosaurs
An event that wipes out a large portion of the organisms alive, such as at the end of the Permian Period, is known as a ________________.
An event that wipes out a large portion of the organisms alive, such as at the end of the Permian Period, is known as a ________________.
Mass extinction
The very first organisms, _____________, started during the Archean and were adapted to harsh environments.
The very first organisms, _____________, started during the Archean and were adapted to harsh environments.
Bacteria
What are the four major divisions in the geologis time scale, in order?
What are the four major divisions in the geologis time scale, in order?
Precambrian, Paleozoic, Mesozoic, Cenozoic
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