Bill Nye: The Science Guy Fossils worksheet with questions and images.

Here are the answers to the questions on the worksheet, based on the "Bill Nye: Fossils" episode content.

1. Almost all the living things that have lived on Earth are extinct.
2. Fossil comes from the old Latin word that means to dig up.
3. Fossils are remains (or traces) of living things that usually turned to rock.
4. What percentage of all the organisms that have ever lived on Earth are extinct? 99% (Note: Estimates range from 98-99%, but 99% is the standard answer for this video).
5. Bones of animals that were alive between 15-25,000 years ago were preserved in La Brea, CA in tar pits.
6. About how old are the pyramids? 4,500 years old.
7. About old are some of the oldest dinosaurs? 230 million years old.
8. About how old are some of the oldest fossils? 3.5 billion years old.
9. Trees are sometimes preserved as petrified wood because of ash from volcanoes.
10. Silica is just like glass (True).
11. What could be an example of a trace (impression) fossil? Footprints (or burrows/tracks).
12. Fossils are usually found in sedimentary rock.
13. What can the type of fossil tell us about extinct animals? It can tell us what they ate, how they moved, or what their environment was like.
14. Fossils are the remains or traces of ancient life.
15. What did the study of *Archaeopteryx* make scientist realize? That birds evolved from dinosaurs.
16. Fossils are still forming today (True).

Follow-up Questions:
1. List two facts you have learned from this video.
a. Most species that have ever lived are now extinct.
b. Fossils provide evidence that the Earth has changed over time.
*(Note: You can choose any two facts from the answers above).*

2. What question(s) may you still have about fossils after watching this episode?
*(This is a personal opinion question, but a good example answer is: "How do scientists know exactly how old a fossil is if it's millions of years old?")*

Final Answer:
See the completed list above.