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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 23.
Nicolaus Otto (died 1891) was the German inventor of the first internal-combustion engine to burn fuel efficiently directly in a piston chamber. Although other internal combustion engines had been invented, these were not based on four separate strokes. The concept of four strokes is likely to have been around at the time of Otto's invention, but he was the first to make it practical.
The Otto engine was designed as a stationary engine. The stroke is an upward or downward movement of a piston in a cylinder. Used later in an adapted form as an automobile engine, four up-down strokes are involved: (1) downward (intake) stroke -- gas and air enter the piston chamber, (2) upward (compression) stroke -- the piston compresses the mixture, (3) downward (power) stroke -- an electric spark ignites the mixture, and (4) upward (exhaust) stroke -- the exhaust gas is released from the piston chamber.
1. The article mentions that Otto's engine was used later inA. boats.2. The Latin origin of combustion meant
D. automobiles.A. to explode.3. The explosions in an internal-combustion engine occur at the
B. to burn.
C. to compress.
D. to enrage.A. first stroke.4. (See dictionary.com.) A piston is
B. second stroke.
C. third stroke.
D. fourth stroke.A. a solid disk moving snugly inside a cylinder.
B. a term in music.
C. a force of nature.
D. an electric spark.
The information comes from Wikipedia.
Write down your answers and then see Answer Key below.
Answer Key: 1-D..........2-B..........3-C..........4-A
Corrections? Questions? Comments? E-mail Robert Jackson at firstname.lastname@example.org.