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Chapter 4 Study Guide Flashcards | StudBud
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Chapter 4 Study Guide
Chapter 4 Study Guide
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#fossils #geological #pangea #continentaldrift
Flashcards
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Answers
1
Index Fossils are fossils that provide a ?
The age of the planet
Use to place fossils in order
reference used to see who the oldest fossil is
reference used to date rocks and nearby fossils.
2
________are the preserved remains or traces of organisms that lived in the past.
Rocks
Fossils
History
Evolution
3
Which led scientists to infer that Earth is about 4.6 billion years old?
Studying fault lines
Using radioactive dating on moon rocks
Studying index fossils
Applying the law of superposition
4
What has the study of fossils allowed scientists to do?
study present ocean temperatures at different depths
predict which organisms will become extinct in the future
describe past environments and the history of life
analyze the chemical composition of rocks & minerals
5
What is the isotope scientist use to find out how old a fossil is ?
C-11(Carbon-11)
C-12(Carbon-12)
C-13(Carbon-13)
C-14 (Carbon-14)
6
.What are the four major time division on the geologic time scale ?
Eons, Eras, Paleozoic, Cambrian
Eons, Eras,Periods, Epochs
Eras,Periods, Mesozoic, Cenozoic
Precambrian, Paleozoic,Mesozoic, Cenozoic
7
Earth’s earliest atmosphere lacked which gas that is necessary for life
Nitrogen
Oxygen
Argon
Carbon dioxide
8
The relative age of a rock is
Less than the age of the fossils the rock contains
Its age compared with the ages of other rocks
The number of years since the rock formed
Its age based on how much carbon-14 the rock contains
9
A mnemonic to remember the order of the eras
Precambrian Paleozoic Mesozoic Cenozoic
Purple Pilots Make Cakes
People Place Many Comments
Purple Pandas Make Crepes
10
A type of organism that no longer exists on Earth is said to be
Dying
Extinct
Evolved
Forgotten
11
What’s a fault ?
An Earthquake
When you're the verdict
When you do something wrong
A break in the Earth's Crust
12
A scientist who studies fossils ?
Ecologist
Biologist
Geologist
Paleontologist
13
Geologists use the _________ to determine the relative ages of sedimentary rock layers.
Law of Gravity
Law of Motions
Law of Conservation
Law of Superposition
14
A fossil formed when minerals replace all or part of an organism is called a
Trace fossil
Petrified Fossil
Cast
Mold
15
The long span of time that covers about 88% of Earth’s history and ended 542 million years ago
is called Mesozoic Era
is called Cenozoic Era
is called Precambrian Time
is called Paleozoic Era
16
What was the first organism to appear on Earth?
Cyanobacteria
Dinosaurs
Plants
Humans
17
A series of dinosaur footprints in rock are an example of a(n)
Carbon Film
Trace Fossil
Preserved Remains
Petrified Fossil
18
For example Paleontologists have found that older rocks contain fossils of
Organisms that are more complex than those alive today
Both simple and complex organisms
Only organisms that are alive today
Simpler organisms
19
What are the parts of animals most likely to be preserved?
Teeth, skeletons, and hair
Skeletons
bones, shells, or teeth
Bodies
20
Geologists use radioactive dating to
Tell where one soil horizon ends and the next one begins
Determine the relative ages of rock layers
Determine the absolute ages of rocks
Tell the difference between molds and casts
21
Sometimes forces inside Earth turn rock layers over completely. This is called
An unconformity
A Fault
An intrusion
Folding
22
The climate in the center of Pangaea was probably a(n)
Extremely cold, polar climate
Hot, dry desert climate
Warm, mild climate
Wet tropical climate
23
The time it takes for half of the radioactive atoms in a sample of a radioactive element
to decay is the element’s Potassium-argon date
to decay is the element’s Half-life
to decay is the element’s Relative age
to decay is the element’s Absolute age
24
What era are we currently living in?
Mesozoic Era
Cenozoic Era
Precambrian Time
Paleozoic Era
25
Principle that states that Earth's changes today and it changed in the past?
Evolution
Superposition
Erosion
Uniformitarianism
