Problem: Glacier:

The top 50 m (160 ft) of a glacier are rigid because they are under low pressure. This upper section is known as the fracture zone and moves mostly as a single unit over the plastically flowing lower section. When a glacier moves through irregular terrain, cracks called crevasses develop in the fracture zone. Crevasses form due to differences in glacier velocity. If two rigid sections of a glacier move at different speeds and directions, shear forces cause them to break apart, opening a crevasse. Crevasses are seldom more than 46 m (150 ft) deep but in some cases can be 300 m (1,000 ft) or even deeper. Beneath this point, the plasticity of the ice is too great for cracks to form. Intersecting crevasses can create isolated peaks in the ice, called seracs.

Why are glacial crevices formed?
---
A: differences in glacier velocity

Problem: Post-punk:

The term "post-punk" was first used by journalists in the late 1970s to describe groups moving beyond punk's sonic template into disparate areas. Many of these artists, initially inspired by punk's DIY ethic and energy, ultimately became disillusioned with the style and movement, feeling that it had fallen into commercial formula, rock convention and self-parody. They repudiated its populist claims to accessibility and raw simplicity, instead seeing an opportunity to break with musical tradition, subvert commonplaces and challenge audiences. Artists moved beyonds punk's focus on the concerns of a largely white, male, working class population and abandoned its continued reliance on established rock and roll tropes, such as three-chord progressions and Chuck Berry-based guitar riffs. These artists instead defined punk as "an imperative to constant change", believing that "radical content demands radical form".

Who coined the term post-punk?
---
A: journalists in the late 1970s

Problem: Orthodox Judaism:

Modern Orthodoxy, as a stream of Orthodox Judaism represented by institutions such as the U.S. National Council for Young Israel, is pro-Zionist and thus places a high national, as well as religious, significance on the State of Israel, and its affiliates are, typically, Zionist in orientation. It also practices involvement with non-Orthodox Jews that extends beyond "outreach (Kiruv)" to continued institutional relations and cooperation; see further under Torah Umadda. Other "core beliefs" are a recognition of the value and importance of secular studies, a commitment to equality of education for both men and women, and a full acceptance of the importance of being able to financially support oneself and one's family.

what is it important for both men and women orthodox jews to be able to do?
---
A: support oneself

Problem: Alloy:

Alloys are often made to alter the mechanical properties of the base metal, to induce hardness, toughness, ductility, or other desired properties. Most metals and alloys can be work hardened by creating defects in their crystal structure. These defects are created during plastic deformation, such as hammering or bending, and are permanent unless the metal is recrystallized. However, some alloys can also have their properties altered by heat treatment. Nearly all metals can be softened by annealing, which recrystallizes the alloy and repairs the defects, but not as many can be hardened by controlled heating and cooling. Many alloys of aluminium, copper, magnesium, titanium, and nickel can be strengthened to some degree by some method of heat treatment, but few respond to this to the same degree that steel does.

What does recrystalization make permanent?
---
A:
unanswerable