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MATSE exam -2 with complete solutions 2024_2025
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MATSE exam -2 with complete solutions 2024_2025
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MATSE exam #2 with complete solutions2024/2025
According to the course reading, copper is found most readily in this
form. - ANSWER✓✓-copper carbonate
According to the course reading, the Egyptians used tin to do this. -
ANSWER✓✓-make copper harder
A unit cell is: - ANSWER✓✓-the small group of atoms that when
repeated form the complete material.
The atoms in a body centered lattice occupy the following locations:
- ANSWER✓✓-the corners and center (middle) of the cube
For the orthorhombic crystal system: - ANSWER✓✓-a ≠ b ≠ c and all
the interaxial angles are equal to 90°
The hexagonal closed packed structure: - ANSWER✓✓-has the
stacking sequence of ABABAB...
An anisotropic material: - ANSWER✓✓-is a material in which
properties vary depending on which crystallographic direction the
measurements are taken.
A vacancy is a: - ANSWER✓✓-point defect in which an atom is
missing from a lattice site in the crystal.
An alloy is a material: - ANSWER✓✓-in which impurity atoms have
been added.
, An edge dislocation is a: - ANSWER✓✓-linear defect that centers on
the line that is defined along the end of the extra half-plane of
atoms.
In Metal: The Secret Life of Materials, the narrator, Mark Miodownik,
is a: - ANSWER✓✓-materials scientist
According to the video, the first clue to discovering copper may
have been: - ANSWER✓✓-green streaks
According to Mark Miodownik, remnants from early smelting has
been found: - ANSWER✓✓-on a hillside
In the video, the very surprising fact about metals is: - ANSWER✓✓-
they are made of crystals
When you hit a metal, the atoms: - ANSWER✓✓-form a wave of
shuffling atoms
Iron replacing bronze was delayed because: - ANSWER✓✓-iron is
difficult to work with
iron: - ANSWER✓✓-can be purified by pounding out impurities.
Henry Bessemer, with help from Robert Forrester Mushet,
developed a way to: - ANSWER✓✓-mass produce large quantities of
quality steel.
Aluminium is: - ANSWER✓✓-three times lighter than steel
For the production of jet engine parts, creep is prevented by: -
ANSWER✓✓-growing each part from one crystal
Which of these best describes the composition of plain carbon steel?
- ANSWER✓✓-iron-carbon alloy with low carbon content, a little
manganese and only residual amounts of other impurities
Which of these statements is the best description of the properties
of high-carbon steel? - ANSWER✓✓-hardest, strongest, and least
ductile of the carbon steels
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