-Choose the correct answer by clicking on your answer choice. Only one answer is correct. (2 pts. each)
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COMPLETION
-Complete the following questions by selecting the correct answer from the word bank. Misspelled words will be marked as incorrect. Some answers may be used more than once, others may not be used at all. (2 pts. each)
Word Bank
cast mold disconformities relative dating unconformities uniformitarianism catastrophism epochs eons index fossils fossils radiometric dating radioactive decay isotope stable unstable daughter parent Phanerozoic Mesozoic Paleozoic Cenozoic Proterozoic
Question 26
26.
According to the principle of ____________________, geologic process operate today as they did in the Earth's past.
Word Bank
cast mold disconformities relative dating unconformities uniformitarianism catastrophism epochs eons index fossils fossils radiometric dating radioactive decay isotope stable unstable daughter parent Phanerozoic Mesozoic Paleozoic Cenozoic Proterozoic
Question 27
27.
A trilobite was buried by ocean sediment, leaving a cavity, or ___________________.
Word Bank
cast mold disconformities relative dating unconformities uniformitarianism catastrophism epochs eons index fossils fossils radiometric dating radioactive decay isotope stable unstable daughter parent Phanerozoic Mesozoic Paleozoic Cenozoic Proterozoic
Question 28
28.
The process of ____________________ involves the comparison of one rock layer with others in a sequence to determine its age.
Word Bank
cast mold disconformities relative dating unconformities uniformitarianism catastrophism epochs eons index fossils fossils radiometric dating radioactive decay isotope stable unstable daughter parent Phanerozoic Mesozoic Paleozoic Cenozoic Proterozoic
Question 29
29.
The largest divisions of geologic time are called _______________.
Word Bank
cast mold disconformities relative dating unconformities uniformitarianism catastrophism epochs eons index fossils fossils radiometric dating radioactive decay isotope stable unstable daughter parent Phanerozoic Mesozoic Paleozoic Cenozoic Proterozoic
Question 30
30.
Erosion is a major cause of missing rock layers known as _______________________.
Word Bank
cast mold disconformities relative dating unconformities uniformitarianism catastrophism epochs eons index fossils fossils radiometric dating radioactive decay isotope stable unstable daughter parent Phanerozoic Mesozoic Paleozoic Cenozoic Proterozoic
Question 31
31.
Remains of organisms that often are preserved in sedimentary rock are called ____________________.
Word Bank
cast mold disconformities relative dating unconformities uniformitarianism catastrophism epochs eons index fossils fossils radiometric dating radioactive decay isotope stable unstable daughter parent Phanerozoic Mesozoic Paleozoic Cenozoic Proterozoic
Question 32
32.
Finding the age of a rock based on the ratio of parent material to daughter material is called ___________________.
Word Bank
cast mold disconformities relative dating unconformities uniformitarianism catastrophism epochs eons index fossils fossils radiometric dating radioactive decay isotope stable unstable daughter parent Phanerozoic Mesozoic Paleozoic Cenozoic Proterozoic
Question 33
33.
When an isotope is _______________, it stays in its original form.
Word Bank
cast mold disconformities relative dating unconformities uniformitarianism catastrophism epochs eons index fossils fossils radiometric dating radioactive decay isotope stable unstable daughter parent Phanerozoic Mesozoic Paleozoic Cenozoic Proterozoic
Question 34
34.
When an isotope is ________________, it is radioactive.
Word Bank
cast mold disconformities relative dating unconformities uniformitarianism catastrophism epochs eons index fossils fossils radiometric dating radioactive decay isotope stable unstable daughter parent Phanerozoic Mesozoic Paleozoic Cenozoic Proterozoic
Question 35
35.
The more _______________ material there is in a rock sample, the older the rock is.
Word Bank
cast mold disconformities relative dating unconformities uniformitarianism catastrophism epochs eons index fossils fossils radiometric dating radioactive decay isotope stable unstable daughter parent Phanerozoic Mesozoic Paleozoic Cenozoic Proterozoic
Question 36
36.
The ______________ era is known as the Age of Reptiles.
Word Bank
cast mold disconformities relative dating unconformities uniformitarianism catastrophism epochs eons index fossils fossils radiometric dating radioactive decay isotope stable unstable daughter parent Phanerozoic Mesozoic Paleozoic Cenozoic Proterozoic
Question 37
37.
The eon we live in now is the ____________________ eon.
Word Bank
cast mold disconformities relative dating unconformities uniformitarianism catastrophism epochs eons index fossils fossils radiometric dating radioactive decay isotope stable unstable daughter parent Phanerozoic Mesozoic Paleozoic Cenozoic Proterozoic
Question 38
38.
We live in the ______________ era, which began about 65 million years ago.
Word Bank
cast mold disconformities relative dating unconformities uniformitarianism catastrophism epochs eons index fossils fossils radiometric dating radioactive decay isotope stable unstable daughter parent Phanerozoic Mesozoic Paleozoic Cenozoic Proterozoic
Question 39
39.
The ______________ era ended about 248 million years ago.
Sequencing - Sequence the following geologic cross sections.
Question 40
40.
The pictures above show geologic changes. However, the pictures are out of order. Label the pictures with the letters A, B, C, D & E to show the correct geological sequence. The picture at the far left is to be labeled with the letter C. Record your answer with the letter sequence that correctly shows the geological sequence from left to right.
MATCHING
Complete the following matching questions by clicking on the correct answer. Only one answer is correct. (2 pts. each)
Question 41
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Question 47
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Question 50
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Do NOT forget to turn in this assignment on Google Classroom after you have submitted it here! No credit will be awarded for unsubmitted assignments.
How are rock layers arranged in the geologic column?
A. Youngest rocks are in the middle.
B. Youngest rocks are on the bottom.
C. Oldest rocks are on the bottom.
D. Oldest rocks are on the top.
What does a scientist need to know in order to find out the absolute age of a rock?
A. the rate of decay for all elements in the rock
B. the rate of decay for a radioactive element in the rock.
C. the rate of superposition for a radioactive element in the rock
D. the rate of decay of the rock's half-life
What is amber?
A. a hard shell
B. hardened tree sap
C. an insect's body
D. wet, sticky tree sap
Which of the following is an example of a trace fossil?
A. preserved footprints
B. mold & cast
C. hardened tree sap
D. a frozen mammoth
Which kind of temperatures will slow down an organism's rate of decay?
A. warm temperatures in a wet climate
B. cool temperatures
C. freezing temperatures
D. hot temperatures
What does the rock and fossil record represent?
A. index fossils
B. geologic time
C. the Age of Reptiles
D. the Age of Mammals
If a trilobite were buried by ocean sediment, it would leave a cavity, or a(n)
A. trace fossil.
B. mold.
C. cast.
D. index fossil.
What process involves the comparison of rock layers with others in a sequence to determine its age?
A. radioactive decay
B. radiometric dating
C. relative dating
D. absolute dating
A fossil used to date surrounding rock layers is called a(n)
A. index fossil.
B. mold.
C. cast.
D. trace fossil.
To determine the most accurate and precice age of the Earth's oldest rocks, geologists would use
A. relative dating.
B. the uranium-lead method.
C. the carbon-14 method.
D. index fossils.
What do scientists think may have caused dinosaurs to become extinct?
A. climate change
B. competition from mammals
C. disappearance of prey
D. competition between dinosaurs
What happens during radioactive decay?
A. Isotopes become radioactive.
B. Stable isotopes become unstable isotopes.
C. Radioactive isotopes break down into stable isotopes of other elements.
D. Radioactive isotopes break down into unstable isotopes.
How do geologists use the geologic time scale?
A. to divide the Earth's history into managable parts
B. to date rock layers
C. to predict future extinction events
D. to record catastrophes
What can animal tracks tell about the animal that left them?
A. what the animal ate
B. how big it was
C. its color
D. its mating habits
What can a scientist learn by studying the relationships between fossils?
A. how paleontology has changed
B. how life has changed
C. how science has changed
D. how the geologic column has changed
Global climate change may have caused the extinction of which group of animals?
A. raptors (predatory birds)
B. mammals
C. dinosaurs
D. insects
What process compares one rock layer with others in a sequence?
A. radioactive decay
B. radiometric dating
C. relative dating
D. absolute dating
Molten rock that squeezes into existing rock and cools is called what?
A. folding
B. fault
C. intrusion
D. extrusion
Which of the following is not a measure of absolute dating?
A. uranium-lead
B. strontium-rubidium
C. carbon-12
D. potassium-argon
What do scientists know about an undisturbed sequence of rocks?
A. Older rocks are on top of younger rocks.
B. Younger rocks are on top of older rocks.
C. Younger rocks are under older rocks.
D. Older rocks have eroded away.
Where are most fossils preserved?
A. in ice
B. in amber
C. in sedimentary rock
D. in asphalt
As long as a sequence of rock layers is undisturbed, what can scientists know about it FOR CERTAIN?
A. No one has been there before.
B. Older rocks are on top of the sequence.
C. Younger rocks are on top of the sequence.
D. All of the rocks are the same age.
How old would rock surrounding a Tropites fossil be?
A. about 210 million years old
B. about 47 million years old
C. nearly 4.6 billion years old
D. less than 100,000 years old
During which eon were the earliest known rocks formed on Earth?
A. Hadean
B. Archean
C. Proterozoic
D. Phanerozoic
Which of the following can scientists NOT interpret by examining fossils?
A. how Earth's environment has changed over time
B. how plants and animals have changed over time
C. the age of certain layers of rock
D. how the pull of gravity has changed
The process in which minerals replace tissues.
A. fossil
B. mineral replacement
C. trace fossil
D. mold
E. cast
F. index fossil
A preserved trace or remains of an organism that lived long ago, most commonly preserved in sedimentary rock.
A. fossil
B. mineral replacement
C. trace fossil
D. mold
E. cast
F. index fossil
A mark or cavity made in a sedimentary surface by a shell or other body.
A. fossil
B. mineral replacement
C. trace fossil
D. mold
E. cast
F. index fossil
A fossil from a specific time period.
A. fossil
B. mineral replacement
C. trace fossil
D. mold
E. cast
F. index fossil
A fossil formed by an animal's movement.
A. fossil
B. mineral replacement
C. trace fossil
D. mold
E. cast
F. index fossil
A mold filled with sediment.
A. fossil
B. mineral replacement
C. trace fossil
D. mold
E. cast
F. index fossil
The idea that geologic processes now are the same as in the past.
A. paleontology
B. uniformitarianism
C. modern geology
D. catastrophism
The idea that geologic change happens suddenly.
A. paleontology
B. uniformitarianism
C. modern geology
D. catastrophism
The study of past life.
A. paleontology
B. uniformitarianism
C. modern geology
D. catastrophism
A science that combines uniformitarianism and catastrophism.
