3.1.6.2 Material Properties
Quiz
•
Design
•
7th - 12th Grade
•
Medium
Harriet Paterson
Used 22+ times
FREE Resource
14 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Tensile Strength
The ability of a material to stretch without breaking or snapping
The ability of a material to stretch
The ability of a material to move
The ability of a material to break or snap
Answer explanation
TENSILE TESTING. A simple workshop test. A piece of material is clamped in a vice. A fixed weight is hung from the end. The amount of deflection, is a measure of its resistance and tensile strength. A selection of materials of the same section, cut to exactly the same size, can be tested in this way.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Elasticity
The Ability of a material to absorb force and flex in multiple directions
The Ability of a material to absorb force and flex in one direction
The Ability of a material to absorb force and flex in different directions, returning to its original position
The Ability of a material to absorb force and flex along its length
Answer explanation
A simple workshop test. A piece of material is clamped in a vice. A fixed weight is hung from the end and the material bends / deflects. When the weight is quickly removed, the material ‘springs back’. The amount of deflection, is a measure of its elasticity. A selection of materials of the same section, cut to exactly the same measurements, can be tested in this way.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Hardness
The ability of a material to be scratched
The ability of a material to resist scratching, wear and tear and indentation
The ability of a material to last over time
The ability of a material to change shape
Answer explanation
A method of measuring the hardness of a material, is to drop a ‘plug’ down a tube. When the ‘plug’ hits the material below, the surface will suffer an indent. The indent produced on different materials, can be compared. Consequently, the smaller the indent, the harder the material
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Toughness
The ability of a material to break or shatter
The ability of a material to absorb moisture without breaking or shattering
The ability of a material to absorb light
The ability of a material to absorb sudden shock without breaking or shattering
Answer explanation
The industrial device below measures toughness. The pendulum is allowed to ‘swing’ from a set starting position. The resulting ‘distortion’ to the sample material can be measured on the scale. This gives an indication of the materials toughness.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Malleability
The ability of a material to be reshaped in one direction without cracking
The ability of a material to be reshaped in all directions without cracking
The ability of a material to be reshaped along its width without cracking
The ability of a material to be reshaped along its length without cracking
Answer explanation
Test: A piece of tube is placed over a piece of material and used as a lever. The material is folded to 90 degrees. Cracks / damage on the inside of the bend represents a lack of malleability.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Ductility
The ability of a material to change shape (deform) usually by stretching along its length
The ability of a material to reduce in size
The ability of a material to change shape (deform) usually by stretching along its width
The ability of a material to change weight by stretching along its length
Answer explanation
A piece of tube is placed over a piece of material and used as a lever. The material is folded to 90 degrees. Cracks / damage on the outside of the bend represents a lack of ductility.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Conductivity
The ability of a material to melt
The ability of a material to conduct electricity or heat
The ability of a material to generate electricity
The ability of a material to generate heat
Answer explanation
1. A test for electrical conductivity: A voltmeter is used to measure resistance. The probes are set to the same distance on each sample. The resistance is a measure of the materials conductivity.
2. A test for heat conductivity/transfer: A bunsen burner is placed at one end of a piece of material and a temperature meter at the other end. The time it takes for the temperature to change at the opposite end of the material is recorded. If a selection of materials of the same length and section are tested in this way, their conductivity can be compared.
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