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DINOSAUR GHOSTS By: J. Lynett Gillette Pictures by: Douglas Henderson.

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Presentation on theme: "DINOSAUR GHOSTS By: J. Lynett Gillette Pictures by: Douglas Henderson."— Presentation transcript:

1 DINOSAUR GHOSTS By: J. Lynett Gillette Pictures by: Douglas Henderson

2 EROSION All the natural processes that wear away earth and rock.
Sometimes fossils are uncovered by erosion caused by wind or rain.

3 The data used to draw a conclusion
EVIDENCE The data used to draw a conclusion What have you learned about this dinosaur from the evidence you’ve found so far?

4 EXCAVATION The process of finding something by digging for it.
What did you find on your recent excavation of the land?

5 EXTINCT No longer living on the earth; having died out.
Why do you think dinosaurs became extinct?

6 FOSSILS The hardened remains of animals or plants of prehistoric times. The scientists examined many fossils.

7 GEOLOGISTS Scientists who study the earth’s crust and its rocks.
There is a team of geologists working at the site digging up fossils.

8 HYPOTHESES Scientific suggestions, based on what is known so far.
We have several hypotheses about what it looked like and what it ate.

9 PALEONTOLOGIST A scientist who studies prehistoric life. A paleontologist’s tools include hammers, brushes and chisels.

10 SPECIMENS Samples taken for scientific study.
They gathered specimens of dinosaurs.

11 Scientists have many theories about the disappearance of dinosaurs.
THEORY A widely held scientific explanation that is based on evidence but cannot be stated as fact. Scientists have many theories about the disappearance of dinosaurs.

12 ASSIGNMENT LAB PAGE 146


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