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WorksheetsFossils & Geologic Time Scale Review
Total questions: 30
Worksheet time: 50mins
What information does a fossil record provide?
How life has changed over time.
How Earth's surface has changed over time.
Earth's past climate and environments.
All of the above.
Which class of rock are most fossils preserved in?
Igneous
Sedimentary
Metamorphic
When a fossil is preserved, which parts of the organism are saved?
Bones
Skin
Organs
Shells
Wings
The hollow shape of an organism that is created once the softer parts of an organism decay is a ____________.
Carbon copy
Cast
Mold
Carbon film
Dissolved minerals that take the shape of an organism's mold is known as a __________.
Petrified fossil
Cast
Carbon film
Index fossil
The most common kind of fossil is ____________.
Molds and casts
Petrified
Index
Carbon film
Footprints, trails, and burrows are all examples of _________ fossils.
Petrified
Preserved
Trace
Index
The sabretooth tiger is an organism that no longer exists and never will again, also known as ____________.
Extinct
A memory
Banished
Petrified
The Law of Superposition helps us determine the _________ age of rock layers.
Absolute
Exact
Relative
The Law of Superposition helps us determine the _________ age of rock layers.
Absolute
Exact
Relative
The Law of Superposition states that...
The oldest layer is typically at the bottom.
The youngest layer is typically at the top.
A fault, intrusion, and extrusion are younger than the layers they cut through.
All rocks are the same age.
When a fault occurs, rock layers are still lined up.
True
False
Unconformities are rock layers that are lost to ___________.
Deposition
Erosion
Black magic
Memphis
Radioactive dating is a process that allows us to find the _____________ age of rocks.
Relative
Comparative
Exact
Absolute
The amount of time it takes for half of an element's atoms to decay is known as ___________.
Quarter-life
Half-life
50 cent
Radioactive
Earth is approximately how old?
4.6 billion years
3.6 billion years
4.6 million years
500 million years
What did geologists use to create the ending points of different time periods?
Relative age of rocks
Radioactive dating
Major changes in life forms
All of the above
Which era are we currently in?
Paleozoic
Cenozoic
Mesozoic
Time does not exist.
The extinction of _________ gave mammals the opportunity to flourish.
Reptiles
Amphibians
Dinosaurs
Invertebrates
Which layer is OLDER? Layer M or Intrusion P?
Layer M
Intrusion P
Which rock layer is the oldest?
A
D
E
F
What is the oldest feature?
A
Fault
L
Q
D
CHALLENGE: Which feature is the oldest?
S
Fault
P
R
H
CHALLENGE: Which feature is the Youngest?
D
Fault
Intrusion B
S
H
Dinosaurs, small mammals, and birds are found in this time period.
Precambrian
Paleozoic
Mesozoic
Cenozoic
How do scientist know when a mass extinction took place?
They find more fossils of plants.
They find no fossils of animals that died together.
They find a sudden disappearance of many fossil species.
They find evidence of changes in Earth’s atmosphere.
What is the correct order from youngest to oldest?
D,J,I,B,A,F,G,E,C,H
H,F,C,E,B,G,A,I,J,D
H,C,E,G,F,B,A,I,J,D
D,J,I,A,G,B,E,C,F,H
