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This quiz consists of 5 multiple choice and 5 short answer questions through Los Angeles Against the Mountains.

Multiple Choice Questions

1. How much had Los Angeles County's debris basins trapped at the time this book was written?
(a) Thirty thousand tons.
(b) Twenty million tons.
(c) One million tons.
(d) Five hundred thousand tons.

2. What is a weir?
(a) Small tugboat.
(b) Small dam.
(c) Large lock.
(d) Large gate.

3. To cool the lava flows of 1973, what does Valdimar Jonsson suggest?
(a) Redirecting the flow towards an iceberg.
(b) Using ice and snow.
(c) Using ten times more water.
(d) Stacking ice blocks along the lava's path.

4. When the author recalls his first time in the Atchafalaya swamps with Charles Fryling in 1980, what does he fondly remember?
(a) Seeing lightning bugs for the first time.
(b) Floating among trees under silently flying birds.
(c) His first encounter with a baby alligator.
(d) The water rushing through locks and gates.

5. The first debris basin in Southern California starts out as what?
(a) Cattle ranch.
(b) Dry pond.
(c) Working gravel pit.
(d) Gold mine.

Short Answer Questions

1. What is Thorbjorn Sigurgeirsson's idea to stop the flow of lava?

2. The author asserts that due to floods in the region, Louisiana loses how much land each year?

3. The first debris basin in Southern California successfully protects what village?

4. How many bowl-shaped excavations line the San Gabriel Mountains to catch debris falling from the mountains?

5. The Civil Defense Council in the Reykjavik National Emergency Center is established in 1962 as what?

(see the answer key)

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