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Physics materials

Description

Quiz on Physics materials, created by Katie Aldred on 14/03/2018.
Katie Aldred
Quiz by Katie Aldred, updated more than 1 year ago
Katie Aldred
Created by Katie Aldred almost 8 years ago
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Resource summary

Question 1

Question
Label each point on the graph.
Image:
Mobile upload (image/jpeg)
Answer
  • limit of proportionality
  • elastic limit
  • yield point
  • Ultimate tensile strength
  • Breaking point

Question 2

Question
The density of a substance is defined as its [blank_start]mass[blank_end] per [blank_start]unit[blank_end] [blank_start]volume[blank_end].
Answer
  • mass
  • unit
  • volume

Question 3

Question
What is the equation to find density?
Answer
  • P=m/V
  • P=mV
  • F=ke

Question 4

Question
Hooke’s Law can be expressed as F=ke.
Answer
  • True
  • False

Question 5

Question
State Hooke’s Law
Answer
  • Force is proportional to extension
  • Force is inversely proportional to extension up to the limit of proportionality
  • Force is proportional to extension up to the limit of proportionality

Question 6

Question
K in the Hooke’s Law equation represents how elastic a material is.
Answer
  • True
  • False

Question 7

Question
A brittle material has [blank_start]very little/no [blank_end]extension before [blank_start]breaking[blank_end].
Answer
  • very little/no
  • breaking

Question 8

Question
A ductile material [blank_start]extends[blank_end] significantly before [blank_start]breaking[blank_end] and can be drawn into [blank_start]wires[blank_end].
Answer
  • extends
  • breaking
  • wires

Question 9

Question
[blank_start]Force[blank_end] is proportional to extension and the material[blank_start] obeys Hooke’s Law[blank_end] up to the limit of proportionality
Answer
  • Force
  • obeys Hooke’s Law

Question 10

Question
The [blank_start]elastic limit[blank_end] is the maximum amount that a material can be stretched and still return to its [blank_start]original length[blank_end]
Answer
  • elastic limit
  • original length

Question 11

Question
The yield point is the point at which [blank_start]stress[blank_end] in the wire suddenly [blank_start]drops[blank_end] when the wire is subject to increasing [blank_start]strain[blank_end]
Answer
  • stress
  • drops
  • strain

Question 12

Question
The ultimate tensile strength is the greatest stress on a material before breaking
Answer
  • True
  • False

Question 13

Question
What is the breaking point of an object?
Answer
  • The point at which the object fails
  • The point at which the material undergoes plastic deformation

Question 14

Question
Elastic behaviour is when an object [blank_start]will[blank_end] return to its [blank_start]original shape[blank_end] when the deforming force is removed
Answer
  • will
  • original shape

Question 15

Question
Plastic behaviour is when the object [blank_start]does not[blank_end] return to its [blank_start]original shape[blank_end] when the deforming force is removed
Answer
  • does not
  • original shape

Question 16

Question
Plastic deformation is permanent deformation/ permanent extension
Answer
  • True
  • False

Question 17

Question
Stress is [blank_start]force per unit cross-sectional area[blank_end]
Answer
  • force per unit cross-sectional area

Question 18

Question
Strain is [blank_start]extension divided by its original length[blank_end]
Answer
  • extension divided by its original length

Question 19

Question
The Young Modulus of a material is the [blank_start]stress divided by the strain [blank_end]
Answer
  • stress divided by the strain

Question 20

Question
What is this the equation for?
Image:
Mobile upload (image/jpeg)
Answer
  • Elastic potential energy
  • Heat energy
  • Kinetic energy

Question 21

Question
What does the gradient of this graph represent?
Image:
Mobile upload (image/jpeg)
Answer
  • Young Modulus

Question 22

Question
What does the gradient of this graph and the area underneath it represent?
Image:
Mobile upload (image/jpeg)
Answer
  • the spring constant
  • the elastic energy stored

Question 23

Question
What does the area under this graph represent?
Image:
Mobile upload (image/jpeg)
Answer
  • energy per unit volume
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