100 200 400 300 400 Relative Dating Absolute Dating Geologic Time Scale and Fossils Misc. 300 200...
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Transcript of 100 200 400 300 400 Relative Dating Absolute Dating Geologic Time Scale and Fossils Misc. 300 200...
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Relative Dating
Absolute Dating
Geologic Time Scale and Fossils
Misc.
300 300 300
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400
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500 500 500 500
100
Row 1, Col 1
Relative dating providesUs with…
What is the sequence or order of events in which the rocks were laid down?
1,2
Otzi the Ice manAnd the Lindow man’s ages
Were found using ______ dating.
What is C-14 or Absolute?
1,3
Longest division of geologictime
What is an era?
1,4
Why would we notFind fossils in rocks cooled from
Magma?
What is the fossils would melt and be destroyed?
2,1
An igneous intrusion cutsThrough other rock
layers
What is cross cutting?
2,2
The element that the originalRadioactive element
Decays into.
What is the daughter product?
2,3
About 88% of Earth’s History is within this time
Period.
What is Pre-Cambrian?
2,4
Sample A has gone through3 half-lives. The half-life of the
Element is 500 years. How Old is sample A?
What is 1500 years old?
3,1
When rock layers are incomplete. Can be caused by
Erosion.
What is unconformity?
3,2
The original radioactive elementBefore it begins to decay.
What is the parent material?
3,3
Molds, Casts, PetrificationAnd Carbonization
What are different methods of fossil preservation?
3,4
To match up rock layers byLooking at clues.
What is to correlate?
4,1
Remains or traces of onceLiving organisms
Lived for a certain knownTime period and can
Be used to date things.
What is fossils and index fossils?
4,2
The time it takes for 50%Of the radioactiveIsotope to decay.
What is half-life?
4,3
Where would we break up The time line below
To represent recent geologic history And geologic past?
What is …?
Today 4.6bya
4,4
Difference between absolute and Relative dating.
What is R= sequence or order of events, A= Age in years of a sample?
5,1
Which is the oldest rock layer?Which is the youngest?
What principle tells us this?
What is I, R and the principle of superposition?
5,2
How many half-lives has an Element undergone if there is
25 grams of parentMaterial and 75grams of
Daughter?
What is two half-lives?
5,3
Why do we know more aboutRecent geologic history
Than events occurring in geologicPast?
What is fossil record, preservation and destroying of clues and evidence?
5,4
Fill in the table if we startWith 100g of the sample.
Parent Material (50, 25), Daughter Product (50, 75)
Hal-life Parent Material Daughter Product
1
2