Why was the "ground zero" of the first nuclear explosion in July 1945 near Los Alamos, New Mexico, covered with glass?
a. Larger than expected, the explosion destroyed a town with houses that still had many glass windows.
b. The first nuclear bomb was embedded in one ton of glass to allow special cameras to record the nuclear meltdown.
c. The detonation had shattered the glass of nearby homes and vehicles and sucked the debris to the center.
d. The heat of the explosion melted the sandy surface of the crater and turned it into glass.
Answer: d. The heat of the explosion melted the sandy surface of the crater and turned it into glass.
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The Massachusetts assembly urged other assemblies to resist new taxes in the ____________________ Letter. This letter led to a crisis when colonial assemblies refused to rescind it and governors dissolved the assemblies
Fill in the blank(s) with correct word
The first state to secede from the union was ____________________
Fill in the blank(s) with correct word
What development in 1861 eventually propelled hundreds of thousands of immigrants into Siberia?
A. the emancipation of Russian serfs B. new mine, rail, and commercial farm enterprises C. one-sided treaties favoring Russia D. the discovery of gold
In the Southwest, the Anasazi and later Pueblo peoples developed farming communities
Indicate whether the statement is true or false.