QUES: Depleted uranium is also used as a shielding material in some containers used to store and transport radioactive materials. While the metal itself is radioactive, its high density makes it more effective than lead in halting radiation from strong sources such as radium. Other uses of depleted uranium include counterweights for aircraft control surfaces, as ballast for missile re-entry vehicles and as a shielding material. Due to its high density, this material is found in inertial guidance systems and in gyroscopic compasses. Depleted uranium is preferred over similarly dense metals due to its ability to be easily machined and cast as well as its relatively low cost. The main risk of exposure to depleted uranium is chemical poisoning by uranium oxide rather than radioactivity (uranium being only a weak alpha emitter).
What trait causes depleted uranium to be used in gyroscopic compasses?

ANS: high density

QUES: Opponents argue that the death penalty is not an effective means of deterring crime, risks the execution of the innocent, is unnecessarily barbaric in nature, cheapens human life, and puts a government on the same base moral level as those criminals involved in murder. Furthermore, some opponents argue that the arbitrariness with which it is administered and the systemic influence of racial, socio-economic, geographic, and gender bias on determinations of desert make the current practice of capital punishment immoral and illegitimate.
What do death penalty opponents argue that capital punishment is effective at doing?

ANS: unanswerable

QUES: Cotton remained a key crop in the Southern economy after emancipation and the end of the Civil War in 1865. Across the South, sharecropping evolved, in which landless black and white farmers worked land owned by others in return for a share of the profits. Some farmers rented the land and bore the production costs themselves. Until mechanical cotton pickers were developed, cotton farmers needed additional labor to hand-pick cotton. Picking cotton was a source of income for families across the South. Rural and small town school systems had split vacations so children could work in the fields during "cotton-picking."
What difficulty in harvesting cotton required a large labor force?

ANS: hand-pick

QUES: When the news arrived at Paris of the surrender at Sedan of Napoleon III and 80,000 men, the Second Empire was overthrown by a popular uprising in Paris, which forced the proclamation of a Provisional Government and a Third Republic by general Trochu, Favre and Gambetta at Paris on 4 September, the new government calling itself the Government of National Defence. After the German victory at Sedan, most of the French standing army was either besieged in Metz or prisoner of the Germans, who hoped for an armistice and an end to the war. Bismarck wanted an early peace but had difficulty in finding a legitimate French authority with which to negotiate. The Government of National Defence had no electoral mandate, the Emperor was a captive and the Empress in exile but there had been no abdication de jure and the army was still bound by an oath of allegiance to the defunct imperial regime.
Which empire was overthrown by a popular uprising in Paris?

ANS:
the Second Empire