What is an influence that can deform a body or change its movement?
force
Give an example of shear
.....
Give an example of an elastic object
....
How do you call the structures that are composed of bars that from triangles and are lightweight and sturdy?
truss structures
How do you call the physical demands that a body or object must withstand when one or more external forces are applied to it?
stresses
What is an unstable equilibrium?
When a force is applied to a body in an unstable equilibrium, it causes body to move
How do you call a method of making weak structures stronger by giving them a triangular shape?
trussing/ triangulation
Give an example of bending
.....
Give an example of a rigid object
.....
If something elastic, what does it mean?
It can deform but then returns to its original shape
Walls and dams are the examples of what kind of structures?
mass structures
How do you call the types of structures that are solid, heavy and very sturdy?
mass structures
This is a type of a body stress that happens when the forces that act on it flatten it or reduce its length or thickness. It often happens when the structures need to support a weight
compression
How do you call the structures that are held in place by cables and suspenders attached to sturdy supports?
suspended structures
Name at least 3 of the 5 types stresses that a body may have to support?
Compression, tension or traction, bending, torsion, and shear
What is the collection of elements arranged in an optimum way to support a body or an object?
structure
Give an example of torsion
........
In which structures are the stay cables often used?
suspension bridges
How do you call the structures that are formed by columns and beams that act as supporting elements?
frame structures
A structure of the building is an example of what kind of structure?
frame structure
Cranes and electricity pylons are the examples of what kind of structures?
truss structures
This stress is caused by by two equal forces that act close to each other and are applied in two opposite directions. This kind of stress tends to cut the material if it cannot twist or bend
shear
Name at least 2 ways to support the stability of a structure
By widening the base; locating the center of gravity at a lower point; making a good foundation; using stay cables
This is a type of a stress that is caused by the forces that tend to stretch a body
tension
How do you call a horizontal architectural element that is used to support the weight of the floors and the ceilings?
Grider, beam
Give an example of tension / traction
....
What is a center of gravity?
A point where the weight of the object is considered to be concentrated
This type of stress is caused by the forces that make a body twist
torsion
Suspension bridges, tents and marquees are the examples of what kind of structures?
suspended structures
Give an example of a plastic object
.....
What is a strength of a material?
Its ability to withstand external forces without breaking
If something is rigid, what does it mean?
It doesn't deform
What are sections?
Bars with different cross-sections; e.g. L/T/U/H-shaped, square, triangular, round, etc.
What is a stable equilibrium?
It is when a body doesn't move when a force is applied to it
How do you call a vertical architectural element that is used to support the weight of a structure?
column, pillar
This is a type of stress when the forces acting on an element make it curve or bend. It is often done by supporting the two ends and applying force in the center
bending
Give an example of compression
....
If something is plastic, what does it mean?
It gets deformed and stays like this
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