Question

WILL FAN AND MEDAL!!!!
Imagine it is a pleasant, though cool, summer day. As you sit outside your lake cabin, you look out at the expansive lake in front of you. The lake is at least 200 miles long and just under 2,000 feet (600 meters) deep. This would truly be a Great Lake. For some reason, you are called away from your lake retreat for three days. When you return, the lake is gone. All that you can see is a muddy, silty slope that leads to a canyon nearly a half-mile deep and a small river at the bottom. Of course, you might say that this would be impossible. Lakes of this size just do not disappear that quickly. The processes involved in canyon creation takes thousands upon thousands of years, not three days.

Interestingly enough, this is a true scenario. And it did not happen just once. Several times in the last 50,000 years, a lake of this size disappeared almost overnight. In this activity, you are going to explore how this occurred.

Lake Missoula, which was located in western Montana, is directly responsible for creating some of the land forms found in northern Idaho, eastern Washington, and along the Columbia River. You will conduct an Internet search to better understand the reason these events occurred. When you have completed your research, answer the questions about the Missoula Ice Age floods.

As you conduct your research, feel free to use the resources listed here, as well as others you may discover:

Answer 1

disappear that quickly. The processes involved in canyon creation takes thousands upon thousands of years, not three days.

Interestingly enough, this is a true scenario. And it did not happen just once. Several times in the last 50,000 years, a lake of this size disappeared almost overnight. In this activity, you are going to explore how this occurred.

Lake Missoula, which was located in western Montana, is directly responsible for creating some of the land forms found in northern Idaho, eastern Washington, and along the Columbia River. You will conduct an Internet search to better understand the reason these events occurred. When you have completed your research, answer the questions about the Missoula Ice Age floods.

As you conduct your research, feel free to use the resources listed here, as well as others you may discover:

Answer 2

http://geology.isu.edu/Digital_Geology_Idaho/Module13/mod13.htm
http://www.glaciallakemissoula.org/virtualtour/index.html
http://volcanoes.usgs.gov/vsc/glossary/
http://formontana.net/shores.html
http://hugefloods.com/LakeMissoula.html

Answer 3

a. Specifically, how were the scablands of eastern Washington created?

b. What is another example of evidence that these floods occurred?

c. How would an erratic boulder provide evidence of the flood?