Internal Forces
A force that acts to expand or lengthen the thing it is acting on. It involves stretching or straining (pulling).
Tension
A rotating funnel cloud whirling at extremely high speeds, dropping down to the earth during a storm. It can uproot trees and lift buildings.
Tornado
The most common bridge and simplest type of bridge used. Walkers and bikers typically use this bridge.
Beam Bridge
What are the two types of loads?
Static Loads and Dynamic Loads
What are three main types of structures?
Solid, Frame, and Shell structures
A force that presses or squeezes something together (pushing force).
Compression
A series of waves, made in an ocean or other body of water by an earthquake, landslide, volcanic eruption, or meteorite impact. it can cause huge destruction when they hit coastlines.
Tsunamis
A lightweight, but strong bridge made of trusses; (triangle-shaped frames) along its sides.
Trussel Bridge
Columns, beams, nuts and bolts are examples of what type of load?
Static Load
What type of structure is a spider web, solid, frame, or shell?
Frame
A twisting force that tends to cause rotation.
Torsion
A vibration or motion in the earth’s crust that results from a release of built up energy within the Earth.
Earthquake
This bridge is designed to withstand heavy loads; Roman aqueducts are good examples of this type of bridge.
Arch Bridge
A car driving on a bridge is an example of what type of load?
Dynamic Load
What type of structure is a mountain, solid, frame, or shell?
Solid
A load that is a permanent force on a structure (ie. gravity, or columns)
Static Load
When this happens you should hide under a table?
Earthquake
This bridge hangs between two ends (towers) that hold it up; smaller cables attach the roadway to the hanging cables.
Suspension Bridge
Who designs bridges?
Engineers
What type of structure is a bicycle, solid, frame, or shell?
Frame
A load that is a changing force on a structure (i.e. a person, or snow on a roof)
Dynamic Load
Large or small, they can uproot trees, flip cars and demolish houses.
Tornado
This bridge has a beam that is kept in balance by a counterweight.
Cantilever Bridge
What is the most expensive type of bridge to build?
A suspension bridge
What type of structure is a tunnel, solid, frame, or shell?
Shell