The Fossil Record

Learning ObjectiveI can apply geologic rules to determine the relative age of fossils and rock layers in a geologic column by correctly answering 4 out of 6 questions.

StandardGLE 0807.5.6: Investigate fossils in sedimentary rock layers to gather evidence of changing life formsSPI 0807.5.5: Compare fossils found in sedimentary rock to determine their relative age

Agenda

PowerPointGroup ActivityIndividual ActivityExit Ticket

Relative DatingRelative Dating

is determining whether an object or event is older or younger than other objects or events

Geologic RulesLaw of Superposition

The younger rock layer is on top of the older rock layer

Geologic Rules (cont.)Law of Original Horizontality

Sedimentary rock layers are deposited in flat horizontal beds

Put it Together

Learning ObjectiveI can apply geologic rules to determine the relative age of fossils and rock layers in a geologic column by correctly answering 4 out of 6 questions.

Fossil RecordFossil

any naturally preserved evidence of life

Index Fossilfossils of organisms that lived during a relatively short, well-defined time span that allows geologists to determine the age of rock

Evidence of Change over Time

Geologic Columnan ideal sequence of rock layers that contains all the known fossils and rock formations on Earth arranged from oldest to youngest

Change Over Time

Put it Together

A

B

CDE

F

Learning ObjectiveI can apply geologic rules to determine the relative age of fossils and rock layers in a geologic column by correctly answering 4 out of 6 questions.

Group ActivityGroup Roles: Project Manager (make sure questions are answered); Historian (Records the group information); Time Keeper (Make sure group is on time); Quality Control (Back up the Project Manager)Given a key, make a geologic column in the order in which the rock layers were deposited.Given a key, place the fossils in the correct sedimentary rock layers of the geologic column you createdFrom the completed column, determine which fossil is the index fossil

Group Activity (cont)What was the bottom layer? Why did you put it there? Cite evidence What was the top layer? Why did you put it there? Cite evidenceWhich fossil is the index fossil? How do you know? Cite evidenceWas there evidence of a change in organisms over time? How do you know? Cite evidence

Individual ActivityAnswer the 6 questions and turn in the sheet.

Exit TicketName, date, class period on the index card.Rate the lesson from 1-5 on how well you understand the material.Give me 2 things you learned.Give me something you need help understanding. If you don’t need any help then say none. Tell me what I could do to improve my lesson.

Learning ObjectiveI can apply geologic rules to determine the relative age of fossils and rock layers in a geologic column by correctly answering 4 out of 6 questions.