Earth Science 11 Mount St. Helens Video #2 Worksheet (Page 2 of 3) in pdf

Earth Science 11 Mount St. Helens Video #2 Worksheet Page 2

Earth Science 11

Mount St. Helens Video #2

Name:_______________

(Evidence for a global flood?)

9. Dr. Austin says many geologists are no longer satisfied that the Colorado River carved

out the Grand Canyon over millions of years. What is another theory for how it may

have been made?

Part 3: Logs and Log Deposits

10. Describe how large the landslide was (based on world history)?

11. How many logs floated on top of Spirit Lake one day after the eruption?

12. How are there upright trees buried at the bottom of Spirit Lake without roots?

13. Fill in the blanks. According to the research at Spirit Lake, different types of trees sink

at different rates to the bottom of the lake. This makes it appear to have different

layers of different types of ____________. However, Dr. Austin has observed it is only

the result of one ______________.

14. How might the upright trees we see at the bottom of the Sprit Lake relate to the

Petrified Forests of Yellowstone national park?

Part 4: Peat and Coal Formation

15. How is coal thought to form?

16. What is the abstract model of Dr. Austin for the formation of coal?

Part 5: Biological Recovery

17. How long has it taken for much of the natural habitat to recover from the 1980 blast?

Matty 2014

Earth Science 11 Mount St. Helens Video #2 Worksheet Page 2