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Digging Into Earth's Past
Test Description: Benchmark Review
Instructions: Answer all questions to get your test result.
1) Fossils are important when studying the history of Earth becuase fossils provide evidence of all of the following EXCEPT:
A
how environments on Earth have changed over time
B
how groups of organisms changed over time
C
changes in Earth's surface
D
how oceans originally formed
2) Fossils of Woolly Mammoths have been discovered in the rock layers of Mexico. Which statement provides the BEST explanation for this discovery?
A
Mexico was once covered by cold, fresh water
B
Mammoths lived in many different climates
C
The climate of Mexico has changed over time
D
Mammoths had adapted to the warm temperatures of Mexico
3) What is a fossil?
A
an unusal type of rock
B
the preserved remains or traces of an organism
C
any dead organism
D
a perfect copy of a rock
4) Fossils are almost never found in igneous rocks because the organisms that form fossils
A
get trapped in sedimentary layers
B
require great pressure to form fossils
C
are buried under sand
D
are destroyed by the heat
5) A fossil formed when minerals replace all or part of an organism is called a:
A
cast
B
mold
C
trace fossil
D
petrified fossil
6) Which type of fossil can provide clues about the activities of ancient organisms?
A
molds and casts
B
carbon films
C
remains preserved in amber
D
trace fossils
7) The Geologic Time Scale is a record of
A
the thickness of sedimentary rock layers
B
the rate of fossil formation
C
the time since the evolution of dinosaurs
D
the life forms and geologic events in Earth's history
8) What do most scientists think caused the mass extinction of dinosaurs and other organisms at the end of the Cretaceous Period?
A
Dinosaurs could not adapt to Earth's changing conditions
B
Dinosaurs were eaten by larger mammals
C
The dinosaurs ate too many other organisms and then starved
D
An ice age covered most of Earth with ice
9) The Geologic Time Scale is most appropriately measured in the following units:
A
Eras and Periods
B
Minutes and Seconds
C
Decades and Centuries
D
Months and Years
10) The Law of Superposition states that the oldest rock layers will be found
A
at the bottom of a rock formation
B
at the top of a rock formation
C
near the middle of a rock formation
D
on the outside of a rock formation
*select an answer for all questions
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