MSE 250 ONLINE EXAM 2 QUESTIONS & ANSWERS
1. Crystal plane orientations in a unit-cell can affect __ and __. - Answer -d. crystal
growth; metal deformation
2. When indexing or drawing crystal orientations, round brackets or parentheses are
used to indicate indices for __. - Answer -b. individual planes
5. A crystallographic plane's __ can be used to draw the plane in the unit cell. - Answer
-b. hkl indices
The planar packing factor of a crystallographic plane of a given crystal can affect the __
of that __. - Answer -b. properties; plane
7. The atom planar-density of a crystallographic plane of a given crystal can affect the
__ of that __. - Answer -properties; plane
When indexing or drawing crystal orientations, curly brackets are used to indicate
indices for __. - Answer -families of planes
A crystallographic plane in a unit cell can be indexed using __ of the plane with the __
unit-cell __. - Answer -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. - Answer -deforms; planes; directions
Metals deform on __ planes and in __ directions. - Answer -close-packed; close-
packed
Solid-state lasers are typically grown by __ deposition of __ of atoms on a specific __. -
Answer -vapor-phase; layers; plane
Gems like diamond grow on __ that reveal the __ of the gem. - Answer -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 __. - Answer -corner; intercepts; axes;
reciprocals; intercepts; smallest; parentheses
In the miller indices for a plane, negative intercepts are represented by __ the indices. -
Answer -bars above
A direction with the same indices as a plane is __ the plane. - Answer -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 __. - Answer -unit cell; indices; intercepts; intercepts; plane;
intercepts
Dendrites in FCC materials grow on __ planes. - Answer -100
NaCl fracture typically occurs on __ planes. - Answer -100
Polyethylene chain folding occurs on the __ plane. - Answer -110
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. -
Answer -include; do not include
The individual planes in a given family of planes have __ packing densities. - Answer -
the same
In Miller indices, square brackets [] are used to denote __. - Answer -individual
directions
In Miller indices, angled or carrot brackets <> are used to denote __. - Answer -families
of directions
In Miller indices, half-moon brackets or parentheses, () are used to denote __. - Answer
-individual directions
In Miller indices, curly brackets {} are used to denote __. - Answer -families of planes
The Miller indices [1 0 0] indicate __. - Answer -an individual direction
The Miller indices <1 0 0> indicate __. - Answer -a family of directions = [100], [010],
[001]
The Miller indices (1 0 0) indicate __. - Answer -an individual plane
The Miller indices {1 0 0} indicate __. - Answer -a family of planes = (100), (010), (001)
A slip system includes __ and __. - Answer -slip planes; slip directions
A slip plane is the plane on which __. - Answer -the easiest slippage occurs
Slip means _____. - Answer -deformation
The slip plane is typically the plane with the __ of atoms. - Answer -closest packing
1. Crystal plane orientations in a unit-cell can affect __ and __. - Answer -d. crystal
growth; metal deformation
2. When indexing or drawing crystal orientations, round brackets or parentheses are
used to indicate indices for __. - Answer -b. individual planes
5. A crystallographic plane's __ can be used to draw the plane in the unit cell. - Answer
-b. hkl indices
The planar packing factor of a crystallographic plane of a given crystal can affect the __
of that __. - Answer -b. properties; plane
7. The atom planar-density of a crystallographic plane of a given crystal can affect the
__ of that __. - Answer -properties; plane
When indexing or drawing crystal orientations, curly brackets are used to indicate
indices for __. - Answer -families of planes
A crystallographic plane in a unit cell can be indexed using __ of the plane with the __
unit-cell __. - Answer -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. - Answer -deforms; planes; directions
Metals deform on __ planes and in __ directions. - Answer -close-packed; close-
packed
Solid-state lasers are typically grown by __ deposition of __ of atoms on a specific __. -
Answer -vapor-phase; layers; plane
Gems like diamond grow on __ that reveal the __ of the gem. - Answer -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 __. - Answer -corner; intercepts; axes;
reciprocals; intercepts; smallest; parentheses
In the miller indices for a plane, negative intercepts are represented by __ the indices. -
Answer -bars above
A direction with the same indices as a plane is __ the plane. - Answer -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 __. - Answer -unit cell; indices; intercepts; intercepts; plane;
intercepts
Dendrites in FCC materials grow on __ planes. - Answer -100
NaCl fracture typically occurs on __ planes. - Answer -100
Polyethylene chain folding occurs on the __ plane. - Answer -110
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. -
Answer -include; do not include
The individual planes in a given family of planes have __ packing densities. - Answer -
the same
In Miller indices, square brackets [] are used to denote __. - Answer -individual
directions
In Miller indices, angled or carrot brackets <> are used to denote __. - Answer -families
of directions
In Miller indices, half-moon brackets or parentheses, () are used to denote __. - Answer
-individual directions
In Miller indices, curly brackets {} are used to denote __. - Answer -families of planes
The Miller indices [1 0 0] indicate __. - Answer -an individual direction
The Miller indices <1 0 0> indicate __. - Answer -a family of directions = [100], [010],
[001]
The Miller indices (1 0 0) indicate __. - Answer -an individual plane
The Miller indices {1 0 0} indicate __. - Answer -a family of planes = (100), (010), (001)
A slip system includes __ and __. - Answer -slip planes; slip directions
A slip plane is the plane on which __. - Answer -the easiest slippage occurs
Slip means _____. - Answer -deformation
The slip plane is typically the plane with the __ of atoms. - Answer -closest packing
