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Fossils Form/Aging
Interpreting the Evidence
Unanswered Questions
What do Fossils Reveal?
Species Relationships & Formations
100
Organisms that are trapped in tree resin that hardens when the tree is buried.
What are amber preserved fossils?
100
fossils, early development and body structures
What are the three evidences of evolution?
100
When a large population goes extinct.
What is mass extinction?
100
The time period the animals was alive.
What do fossils reveal?
100
C. Branching Tree
What diagram is used to determine if two SPECIES are related? A. Punnett Square B. Pie Graph C. Branching Tree D. Pedigree
200
Absolute Dating.
What is one way a scientist determines a fossil's age using radioactive isotopes?
200
homologous structures
__________________ is having similar body parts.
200
When an organism is trapped and fossilized.
What is preservation?
200
Determine the fossils relative age.
What does relative dating determine?
200
B. Isolation
What situation is more likely to cause the production of a new species? A. Lose of habitat B. Isolation C. Meteor impact D. Zombie apocalypse
300
Pro: can determine the fossil's age in numbers. Con: it is destroyed during the test.
Name one pro and one con for Absolute Dating.
300
DNA, protein structure, early development and body structures
How do scientists infer evolutionary relationships?
300
Scientists don't know but can use fossils to predict.
How did dinosaurs go into extinction?
300
The relative age of rock layers.
What do index fossils reveal?
300
Possible... DNA sequence similiarities in protein structure similiarities in early development similarities in body structure fossils
What are two ways to determine if two organisms are related?
400
They are used to determine the age of rock layers.
What is the purpose of Index Fossils?
400
Isotopes
Absolute dating is based on the number of radioactive __________ remaining.
400
Scientists don't know but can use the ages of the fossils to predict.
What was the first organism to become extinct?
400
They show the shape of the organism and how it might have moved.
What do fossils reveal about body structure?
400
They show similar characteristics and body structures.
How do fossils help a scientist know if organisms evolved from an ancient ancestor?
500
1. permineralization 2. nature casts 3. amber preserved
Name three ways a fossil can form.
500
It doesn't get the age in exact years.
What is the drawback of relative dating?
500
Scientists don't know but can predict.
Around what time did the first caveman exist?
500
How organisms have changed their body structure to survive in their environment.
What do fossils reveal about evolution?
500
1. a group in a species gets separated 2. they have to adapt to that surrounding 3. they will adapt to new characteristics and then will eventually change
List three steps on how a new species forms.