1. Which invention listed below was created first and in what year?
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a.
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band-aid, in 1920.
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b.
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pop tab, in 1962.
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c
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light bulb 1878.
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d.
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Ice cream cone, in 1904.
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2. How many centuries are shown by the dates on the timeline?
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a.
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Four. 1800’s, 1850’s, 1900’s, and 1950’s.
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b.
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Three. 1800’s, 1900’s, and 2000’s.
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c.
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Two. 1800’s and 1900’s.
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d.
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One. 1800’s only.
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