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WorksheetsTest structures (2º ESO)
Total questions: 36
Worksheet time: 18mins
A structure is the set of elements in a body that are made to __________ the effects of the _________ that act on it.
protect, structure.
resist, forces.
create, humans.
support, elements.
Forces that act on a structure are called...
Foundations
Loads
Beams
Pillars
Permanent loads are those...
made by humans.
that don't move.
that are constantly acting on a structure and don’t vary over time
that vary over time, such as the force of the wind.
Variable loads are those...
made by humans.
that don't move.
that are constantly acting on a structure and don’t vary over time
that vary over time, such as the force of the wind.
Natural structures are those...
that change over time.
created by humans.
that don't change over time.
created by nature.
Our skeleton is a(n)...
Basic structure
Natural structure
Artificial structure
Artificial structures are those...
that change over time.
created by humans.
that don't change over time.
created by nature.
The bridge in the picture is a(n) ...
Natural structure.
Basic structure.
Artificial structure.
Which are natural structures? (More than one option is possible).
Tree trunk.
Bridge.
Mollusc shell.
Pyramid.
Which elements support the beams?
Pillars
Arches
Foundations
A good structure must be...
Resistant
Stable
Rigid
All the options are correct.
_____________ structures are formed by the joining of bars, forming triangles. The example in the picture is a ___________.
Massive, crane.
Frame, electric tower.
Triangular, crane.
Vaulted, scaffolding.
When a structure remains upright and doesn’t fall over, we say it is ...
Stable.
Resistant.
Rigid.
When a structure resists the stresses without breaking, we say it is...
Rigid.
Stable
Resistant.
Which stress is supporting the paper in the picture?
Which stress are supporting the legs of the stool in the picture?
Which stress is supporting the object in the picture?
Compression stress
Traction stress
Torsion stress
Bending stress
____________ structures resist the loads by means of __________ (steel cables) fixed to very strong supports.
Frame, bars.
Triangular, braces.
Suspension, braces.
Massive, beams.
Which stress is supporting the nut in the picture?
Traction stress
Compression stress
Torsion stress
Bending stress.
The dam in the picture is a ___________ structure because it is a very ___________ and solid structure.
shell, big.
massive, heavy.
frame, resistant.
vaulted, stable.
The body of this car is a ____________ structure because it is made of resistant ____________ to protect the interior.
Frame, bars.
Shell, sheets or panels
Vaulted, elements.
Triangular, bars.
Which stress is supporting the bar number 1 in the picture?
Bending.
Compression
Traction
Torsion
Shear.
The structure of the picture is ...
Triangular
Vaulted
Massive
Frame
Braces are steel bars or cables that support ___________ stress.
Torsion
Traction
compression
bending
We can improve (mejorar) the resistance of a structure by...
Choosing the material and the amount of material.
Adding weight to the base.
All the options are correct.
Stress that tends to flatten the element of a structure.
Traction
Compression
Torsion
Bending
Shear
The stress that supports the element in the picture.
Compression
Traction
Torsion
Bending
Shear
Stress that tends to twist the element of a structure.
Compression
Traction
Torsion
Bending
Shear
Stress that tends to separate or cut the element of the structure.
Compresion
Traction
Torsion
Bending
Shear
____________ structures have vertical and horizontal elements and horizontal elements.
Shell
Vaulted
Triangular
Frame
Internal forces that appear in the elements of a structure.
Stresses
Loads
The ______________ is the base on which the building rests.
pillar
beam
profile
foundation
______________ are elements with a special shape that we use to get resistant structures with less weight.
Pillars
Beams
Braces
Profiles
To improve the stability of a structure we can ...
Get the center of gravity closer to the ground.
Add weight to the base
All the options are correct
The element 1 in the picture is a(n)...
Pillar
Beam
Arch
Bar
We can make a structure more rigid by...
adding bars to form triangles.
reinforcing the joints.
All the options are correct.
