WWII
This is the date of the Allied landings in Normandy in 1944.
What is June 6 (D-Day)
This planet spins on its side, tilted about 98 degrees.
What is
Uranus
Light travels at about this many miles per second.
What is 186,000
Surrounded at Bastogne in December 1944, General McAuliffe sent this one-word reply to a German surrender demand.
What is
"Nuts!"
Basalt and granite belong to this class of rock, formed from cooled molten rock.
What is Igneous
Newton's third law says every action has one of these.
What is an equal and opposite reaction
In 1932, this Polish mathematician first broke the German Enigma cipher, years before Bletchley Park.
Who is
Marian Rejewski
Nearly extinct in the 1970s, this songbird nests almost only under young jack pines, mostly in Michigan.
What is
Kirtland's warbler
Einstein won his 1921 Nobel Prize for explaining this effect, in which light knocks electrons out of metal.
What is
The photoelectric effect
The first atomic bomb was tested in the New Mexico desert in July 1945 under this code name.
What is
Trinity
On the Mohs hardness scale, this soft mineral, used in baby powder, is number 1.
What is Talc
Formulated by Heisenberg in 1927, this principle limits how precisely you can know a particle's position and momentum at once.
What is
The uncertainty principle