Tech Grade 8 Question Preview (ID: 42622)


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How many types of forces are there
a) 1
b) 3
c) 4
d) 7

Name the forces
a) Compression Force
b) Tension Force
c) Torsion (torque) force, Shear force
d) All

Describe Compression force
a) A squashing force
b) Forces act or push TOWARDS each other
c) Member of the structure will feel a squashing force
d) All

What is a strut
a) The pylon poles
b) Member of a structure under COMPRESSION
c) the legs of a table
d) none

Describe a Tension force
a) Opposite of compression
b) It is a stretching force
c) Two forces act or move AWAY from each other
d) All

What is a tie
a) Tie worn with a suit
b) A member in a structure under TENSION is called
c) Under force
d) None

Describe Torsion (torque) force
a) Turning force
b) When it acts ON a member
c) It feels a twisting force
d) All

Define Shear Force
a) Tearing force
b) One part of the member is forced to move OVER the other
c) None
d) First 2

Example of Compression
a) Forcing a rolling newspaper into a ball
b) Pressing an orange
c) Cutting an apple
d) The first 2

Example of tension force
a) Legs of table
b) Elastic band
c) None
d) all

What type of shape is used to strengthen frame structures
a) Square
b) Oval
c) Triangle
d) Circle

When extra members are added to main structure this is called
a) Cross bracing
b) Triangulation
c) All
d) None

The more triangles a frame has the stronger it will be
a) No
b) -
c) False
d) True

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