Reading Comprehension Quiz

[A new interlinear poem will be available each Monday: Weekly Interlinear Poem .]

Use the dictionary, the acronym finder, and the word origins dictionary (links above) as needed. A new quiz is available each Monday through Thursday. This is the quiz for October 2.

The first permanent photograph was made in 1826 by Joseph Niépce, who built on a discovery by Johann Schultz. A silver and chalk mixture darkens under exposure to light. Niépce and Daguerre refined this process. Daguerre first exposed silver-coated copper plates to iodine, obtaining silver iodide. Then he exposed them to light for several minutes. Then he coated the plate with mercury vapor heated to 75° Celsius to amalgamate the mercury with the silver, finally fixing the image in salt water. These ideas led to the famous Daguerreotype.

The resultant plate produced a mirror-like exact reproduction of the scene. The image needed protection from the air and fingerprints, so it was encased in a glass-fronted box.

1. The base plate of a Daguerreotype is
A. copper.
B. iodine.
C. mercury
D. silver
2. Fix in this context means
A. repair.
B. preserve colors or shades.
C. fasten.
D. arrange.
3. Amalgamate means
A. dissolve.
B. intermix.
C. precipitate.
D. merge into a single substance.
4. A silver and chalk mixture
A. fixes the image.
B. makes a mirror-like reproduction.
C. is sensitive to light.
D. needs protection from the air.

The information comes from Wikipedia.

Write down your answers and then see Answer Key below.

Answer Key: 1-A..........2-B..........3-D..........4-C
Corrections? Questions? Comments? E-mail Robert Jackson at