MSE 250 ONLINE EXAM 2 QUESTIONS AND ANSWERS 2026 VERIFIED.

MSE 250 ONLINE EXAM 2 QUESTIONS
AND ANSWERS 2026 VERIFIED.



1. Crystal plane orientations in a unit-cell can affect __ and __. - ANS d. crystal growth; metal
deformation


2. When indexing or drawing crystal orientations, round brackets or parentheses are used to
indicate indices for __. - ANS b. individual planes


5. A crystallographic plane's __ can be used to draw the plane in the unit cell. - ANS b. hkl
indices


The planar packing factor of a crystallographic plane of a given crystal can affect the __ of that
__. - ANS b. properties; plane


7. The atom planar-density of a crystallographic plane of a given crystal can affect the __ of that
__. - ANS properties; plane


When indexing or drawing crystal orientations, curly brackets are used to indicate indices for __.
- ANS families of planes


A crystallographic plane in a unit cell can be indexed using __ of the plane with the __ unit-cell
__. - ANS intercepts; 3; axes


A slip system is where a metal crystal __ on specific __ and along specific __ that are related to
the crystal structure of the metal. - ANS deforms; planes; directions

@COPYRIGHT ALL RIGHTS RESERVED PAGE 1 OF 17

,Metals deform on __ planes and in __ directions. - ANS close-packed; close-packed


Solid-state lasers are typically grown by __ deposition of __ of atoms on a specific __. -
ANS vapor-phase; layers; plane


Gems like diamond grow on __ that reveal the __ of the gem. - ANS specific planes; crystal
structure


To determine the miller indices of a plane in a unit cell, we specify an origin at a __ of the unit
cell; record __ of the plane with the __; take the __ of the __; reduce these to the __ integer
values; enclose these in __. - ANS corner; intercepts; axes; reciprocals; intercepts; smallest;
parentheses


In the miller indices for a plane, negative intercepts are represented by __ the indices. -
ANS bars above


A direction with the same indices as a plane is __ the plane. - ANS perpendicular to


If we are given the Miller indices of a plane, we do the following to draw it. Draw a __; select an
origin; invert the __ to obtain __ on the axes; mark the __ along the xyz axes; draw the __
connecting the __. - ANS unit cell; indices; intercepts; intercepts; plane; intercepts


Dendrites in FCC materials grow on __ planes. - ANS 100


NaCl fracture typically occurs on __ planes. - ANS 100


Polyethylene chain folding occurs on the __ plane. - ANS 110




@COPYRIGHT ALL RIGHTS RESERVED PAGE 2 OF 17

, When determining the number of atoms on a given plane, we __ atoms whose centers are in
the plane, and we __ atoms whose centers are above or below the plane. - ANS include; do
not include


The individual planes in a given family of planes have __ packing densities. - ANS the same


In Miller indices, square brackets [] are used to denote __. - ANS individual directions


In Miller indices, angled or carrot brackets <> are used to denote __. - ANS families of
directions


In Miller indices, half-moon brackets or parentheses, () are used to denote __. -
ANS individual directions


In Miller indices, curly brackets {} are used to denote __. - ANS families of planes


The Miller indices [1 0 0] indicate __. - ANS an individual direction


The Miller indices <1 0 0> indicate __. - ANS a family of directions = [100], [010], [001]


The Miller indices (1 0 0) indicate __. - ANS an individual plane


The Miller indices {1 0 0} indicate __. - ANS a family of planes = (100), (010), (001)


A slip system includes __ and __. - ANS slip planes; slip directions


A slip plane is the plane on which __. - ANS the easiest slippage occurs


Slip means _____. - ANS deformation

@COPYRIGHT ALL RIGHTS RESERVED PAGE 3 OF 17