Act. 91: Fossilized Footprints

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Presentation transcript:

Act. 91: Fossilized Footprints Challenge How can fossil footprints be used to study the behavior of animals that were alive millions of years ago? Key Vocabulary: Hypothesis Inference Observation

Activity 91: Fossilized Footprints Image from: http://www.newark.osu.edu/facultystaff/personal/jstjohn/Documents/Cool-fossils/Trace-fossils.htm These dinosaur tracks were found in a geologic formation known as Dakota Sandstone. Scientists have concluded that these tracks are from the Lower Cretaceous Period (circa 145-66 million years ago). They were found on the eastern side of Dinosaur Ridge in Colorado.

Dinosaur Ridge, Colorado

A Quick Review… What is a fossil? What can fossils tell us about past life? What can they NOT tell us? Why is studying fossils important?

Observations vs. Inferences

What is the difference between an inference and an observation? Observation: an objective description of one or more pieces of evidence Inference: a conclusion drawn from observed evidence

Fossil Footprint Card 1 Anything we notice using Our 5 senses. Conclusion you draw based on observations

Fossil Footprint Card 2 Observations: Inferences:

Fossil Footprint Card 3

Part B #10- Page F-14

Analysis Question 2- Page F-15

Possible Hypotheses…