Elementary
Signs and Symbols
Name the Decade
General Science
Rhymes with Duck
200
Fe, Fi, Fo, Fum! One of those is the symbol for this element
iron
200
Yield traffic signs are in this geometric shape & painted red around the perimeter
a triangle
200
Castro overthrows Batista
1950s
200
This scale is measured in values from 0 to 14 with 7 being neutral
pH
200
2-word phrase for a novice's good fortune
luck
400
By volume this gas makes up about 78% of Earth's atmosphere
nitrogen
400
[DD]
This symbol added to telephone keypads in the 1960s is called an octothorpe because it has 8 pointed ends
the pound
400
U.S. Social Security becomes law
1930s
400
Thrust propels the weight of an airplane forward; this directly opposing force tends to hold it back
drag
400
Grub or vittles, Charlie
chuck
600
Since its discovery in 1940, more than 20 isotopes of this transuranium element have been found, including 239
plutonium
600
Like Athena, Minerva, the Roman goddess of wisdom, was depicted with this bird as her symbol
the owl
600
[DD]
John Glenn gets a hero's welcome, including several parades for being the first American to orbit Earth
1960s
600
6 noble gases were discovered between 1894 & 1900 with argon being the first & this one, Rn, the last
radon
600
A Ford F-150 or Fiat Strada
truck
800
In Japan seaweed, is a major source of this element, a lack of which can lead to a goiter
iodine
800
The company [Victorinox] that makes this tool trademarked its cross & shield symbol in 1909
the Swiss Army Knife
800
France's king & queen make a royal visit to the guillotine
1790s
800
Sodium hypochlorite, NaOCl, is the main ingredient in this laundry product
bleach
800
Explosive-sounding 4-word phrase meaning return on an investment
bang for your buck
1000
Alloys of this metallic element, atomic No. 22, are used in artificial hips
titanium
1000
The symbol seen below represents this on a music score
crescendo
1000
The Gallipoli campaign results in half a million casualties
1910s
1000
These white blood cells that have a single well-defined nucleus are the largest blood cells
the monocytes
1000
Courage
pluck