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This quiz consists of 5 multiple choice and 5 short answer questions through Cooling the Lava.

Multiple Choice Questions

1. Thorbjorn Sigurgeirsson is a native of which country?
(a) Iceland.
(b) Greenland.
(c) Finland.
(d) Sweden.

2. What river does the author mention that connects the Atchafalaya and the Mississippi to form an H?
(a) Red River.
(b) Old River.
(c) Black River.
(d) New River.

3. Officials propose to protect Hilo, Hawaii's second-largest city and port, against lava flows through what?
(a) Barriers.
(b) Relocation.
(c) Plexiglass shields.
(d) Careful monitoring.

4. In the spring of 1973, what does the U.S. Army Corps of Engineers do to try to alleviate the tremendous force of water against the control structure?
(a) Open up all eleven gates.
(b) Dig a ditch to re-route the water.
(c) Purposely flood the entire region.
(d) Dam up water north of the structure.

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

Short Answer Questions

1. In 1973, the eruptions in Heimaey begin on January 23 and continue vigorously before diminishing in strength through when?

2. A towboat is designed to:

3. The U.S. Army Corps of Engineers develops a plan to do what?

4. In 1973, what happens to the Old River Control structure despite engineers drilling it and filling it with cement?

5. The author notes that many regard the Old River Project as what?

(see the answer key)

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