2. Examine the two terms below. Then write a sentence that explains
what the terms have in common.
a. relief
b. public works

Relief: It refers to the assistance regarding financial or fooding, clothing and basic needs in crisis moment.

Public works: It deals with the construction, rehabilitation and repair work of any public feature.

Relief and public works both work and give service during crisis moment or devastation.

Explanation:

In a critical and hard time of nation during any natural or man made disaster relief fund and public works department work together to solve the problems. Relief funds mainly generate by government officials by seeking helps from public like Prime minister relief fund for providing money, cloths or other basic needs (cloth, medicine) as per their capacity and wishes.

Public works rebuilt, reconstruct the public features after any unprecedented accidents or disasters. Both the team works for the betterment of public.

the earth’s crust is broken into separate pieces called tectonic plates (fig. 7.14). recall that the crust is the solid, rocky, outer shell of the planet. it is composed of two distinctly different types of material: the less-dense continental crust and the more-dense oceanic crust. both types of crust rest atop solid, upper mantle material. the upper mantle, in turn, floats on a denser layer of lower mantle that is much like thick molten tar.

each tectonic plate is free-floating and can move independently. earthquakes and volcanoes are the direct result of the movement of tectonic plates at fault lines. the term fault is used to describe the boundary between tectonic plates. most of the earthquakes and volcanoes around the pacific ocean basin—a pattern known as the “ring of fire”—are due to the movement of tectonic plates in this region. other observable results of short-term plate movement include the gradual widening of the great rift lakes in eastern africa and the rising of the himalayan mountain range. the motion of plates can be described in four general patterns:

collision: when two continental plates are shoved together

subduction: when one plate plunges beneath another (fig. 7.15)

spreading: when two plates are pushed apart (fig. 7.15)

transform faulting: when two plates slide past each other (fig. 7.15)

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