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Ch 8 Review Jeopardy Unconformi ties Half Lives Laws Relative/ Absolute Age Fossils 100 200 300 400 500
Break in geologic time Answer
Stratified rock over unstratified rock Answer
Layer of sedimentary rock over an older, eroded layer of rock Answer
True or False: Unconformities determine absolute age Answer
Which law tells us that all rocks beneath an unconformity are older than rocks above the unconformity? Answer
Law of Superposition Home
In radiometric dating, what is the original material called? (the radioactive material) Answer
Home Parent isotope
What do we use to date fossils younger than 70,000 years? Answer
Carbon-14 dating Home
In radiometric dating, scientists compare the proportion of a radioactive parent isotope to a stable: ___________ Answer
Daughter isotope Home
Method of determining the absolute age of an object by comparing the relative percentages of a radioactive and stable isotope Answer
Radiometric dating Home
Radioactive decay happens at a relatively ____________ rate. Answer
States that sedimentary rocks left undisturbed will remain in horizontal layers Answer
Principle of horizontality Home
Which law tells us that a fault or igneous intrusion is always younger than the rock layers it cuts through? Answer
The Law of Crosscutting Relationships Home
States that undisturbed sedimentary rock layer is older than the layer above it and is younger than the layers below it Answer
Law of Superpostion Home
Principle that geologic processes that occurred in the past can be explained by current geologic processes Answer
Assuming a fault is younger than 2 layers its cutting through is explained by this law Answer
Crosscutting Relationships Home
Answer The numeric age of an object is called: ______
Absolute age Home
These layers are used to find absolute age and are often found in glacial lakes Answer
The age of an object in relation to ages of other objects Answer
Relative Age Home
Measuring the rate at which a stream erodes its bed estimates what kind of age? Answer
Home Absolute Age
Answer Arrangement of layer in which coarse and heavy particles are located in the bottom layers
Graded Bedding Home
True or False: bacteria can not survive freezing temperatures Answer
Almost all fossils are discovered in what kind of rock? Answer
Fossilized dung or waste Answer
Fossilized evidence of past animal movement such as tracks and foot prints Answer
Trace Fossil Home
Fossil used to date rock layers of a particular geologic age Answer
Index Fossil Home
We know Earth is 4.6 Billion years old BUT HOW DO WE KNOW?
Unit 3 Review Please see pages in your book for more information *This study guide is just to get you started studying– please look at your notes.
The Rock Record Chapter 8 James Hutton 18 th Century Scottish physician Observed geologic changes that took place on his farm By studying the present,
Chapter 8 Section 1 Pages #’s 1-4 Determining Relative Age.
Dating the Rock Record Soo, do you come here often?
Chapter 8 The Rock Record Chapter 9 The Mesozoic and Cenozoic Eras.
Paleo Test Review Guide. Hutton’s principal of uniformitarianism states…. Hutton’s principal of uniformitarianism states…. -current geologic processes.
Dating Methods / Essential Question How can scientists determine the ages of geologic material?
Who’s First? What is relative dating?
Chapter 8. itarianism A principle that geologic processes that occurred in the past can be explained by current geologic processes. Volcanism and.
Rock Record Spring 2013.
Unit 5: Age of the Earth Objective:
Paleontology Review Game Chapters 8 & 9. Question #1 What is uniformitarianism? A principle that Earth’s history can be explained by current geologic.
The Rock Record Chapter 8 The earth is approximately 4.6 billion years old.
Chapter 8 Section 1 Page 190 #’s 1-6
May 13, 2014 Open up your ISN. Call the next available left side page #84. Title the page “Vocabulary”. Call the following page #85. Title the page “The.
Key Ideas State the principle of uniformitarianism.
2/25/20161 Geologic Time Mr. Litaker. Objectives State the principle of uniformitarianism. Explain how the law of superposition can be used to determine.
The Rock Record Section 1 Section 1: Determining Relative Age Preview Objectives Uniformitarianism Relative Age Law of Superposition Principle of Original.
Geologic Time Rocks record geologic events and the changing life forms of the past. Uniformitarianism: The forces and processes that we observe today have.
Ch 10 Ages of Rocks 10.2/ Relative Ages of Rocks Principle of Superposition: states that in an undisturbed layer of rock, the oldest rocks are.
The questions will be read automatically, if you want to hear it again click on the speaker. 0.
Homework Review Pg. 190 #1-8, 4 ways to determine absolute age.
Chapter 12. Warm-up9/1/15 List and briefly describe three different types of fossils.
“How can scientists determine the age of rocks and fossils?”
Age Dating of Rocks.
Objectives State the principle of uniformitarianism.
Determining Relative Age The beginning of modern geology.
I can: describe methods used to assign Relative ages of rock layers Do Now: 1.How are sedimentary rocks formed? 2.Which fossil is the index fossil From.
Earth Science With Mr. Thomas. ► Fossils: ► Any evidence of earlier life preserved in rock. ► The study of these fossils is called:
fossils Relative age of rocks Radioactive dating Sedimentary Rocks evidence
Determining Geologic Time Many geologic events that Earth Scientists study occurred millions of years ago. The ages of these events can be determined.
Fossils – Dating Lecture 2. Relative Dating As the name implies, this is to find the relative dates of rocks We look at different layers of rocks called,
Chapter 8 Sections 2 & 3 The Relative Age of Rocks Radioactive Dating.
WELCOME TO CLASS. Agenda TODAY Sequencing Time Rock Record Notes Relative Age activity Hand back tests NEXT TIME Absolute age lab Geologic Time QUIZ.
How do scientists sequence Earth’s past events to create the geological time scale? Using evidence from rocks and fossils, scientists can determine the.
Fossils and the Rock Record The Rock Record Rocks record geological events and changing life forms of the past Planet Earth was formed 4.6 billion.
Ch. 23.6: Interpreting the Rock Record
Ch 8-Rock Record Objectives Principle of uniformitarianism
CHAPTER 8-THE ROCK RECORD GRAND CANYON VIDEO GRAND CANYON VIDEO How can we determine ages of rocks and the Earth?
Finding the Relative age of Rocks
Absolute Age Dating.
What is relative and absolute age? A rock layer’s relative age is its age compared to the ages of other rock layers. Generally (relative) versus specifically.
The Relative Age of Rocks 10-2
Dating Rocks Ways to tell the age of a rock. What are relative and absolute Locations?
Copyright © 2014 All rights reserved, Government of Newfoundland and Labrador Earth Systems 3209 Unit: 2 Historical Geology Reference: Chapters 6, 8; Appendix.
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