1. Where is aluminum most abundant?

1. In oceans
2. In volcanoes
3. In the desert
4. In the earth's crust

2. When was aluminum first produced?

1. 1808, to create the typewriter
2. 1850, for telegraph wires
3. 1888, for kitchenware
4. 1939, by the Germans for aircraft used in World War II

3. Before 1888, which of the following were true:

(Select all that apply.)

1. Aluminum was a semi-precious metal.
2. Aluminum was believed to be toxic and people feared contamination if used in cooking or eating utensils.
3. Efforts were made to combine glass with metal to create an unbreakable pane.
4. U.S. Production of aluminum was less than 1000 pounds.

4. The automotive industry is working to use a higher percentage of aluminum in manufacturing. A car has been developed composed of what percentage of aluminum?

1. 81 percent
   
2. 63 percent
   
3. 37 percent
   
4. 29 percent

5. The aluminum extrusion process improves upon the natural properties of Aluminum with all but which of the following effects:

1. It cleans the aluminum of impurities
2. It finishes the aluminum with a layer of oxide
3. It creates uniform profiles that may have ledges, interlocking grooves and screwholes.
4. It can strengthen or improve flexibility of the core aluminum by mixing with alloys.

6. What percentage of aluminum is recyclable?

1. 100 percent
2. 96 percent
3. 94 percent
4. 91 percent

7. At what temperature does aluminum alloy 6063 liquify?

1. 400 degrees Fahrenheit
2. 950 degrees Fahrenheit
3. 1,211 degrees Fahrenheit

8. All of the following are aluminum industries, EXCEPT:

1. milling
2. smelting
3. fabricating
4. refining

9. Compared with steel, which of the following are true of aluminum?

(Select all that apply.)

1. It's one-third the density.
2. It's one-third the weight.
3. It's easier to recover and recycle.

10. Sheet metal used to manufacture automobiles is as thin as:

1. .9 to 3 millimeters thick.
2. 4 to 6.8 millimeters thick.
3. 16 to 2 centimeters thick.
4. 2 to 3 centimeters thick.