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Quiz - Bridges: Forces and Structures
Science quiz tomorrow...
Terms in this set (38)
The act of pushing/pulling or bearing weight
Platform extending horizontally that carries a roadway
Person who uses mathematical and scientific principals to construct and design structures or machines
Horizontal beam used for support
Distance between two supports of a bridge
Force acting on a structure / the area of the structure
The act of twisting
Rigid triangular framework
The act of stretching or pulling
A beam bridge has what force(s) acting mainly on it?
Tension and compression
An arch bridge has what force(s) acting mainly on it?
A suspension bridge has what force(s) acting mainly on it?
Who builds bridges?
What is the strongest material?
What is the second strongest material?
What is the strongest shape?
What is another name for squeezing?
What is another name for stretching?
What is another name for sliding?
What is another name for twisting?
Earthquakes move a structure how?
Push and pull horizontally
Winds move a structure how?
What are the four basic types of bridges?
Beam, arch, cable-stayed, suspension
What is an arch bridge's span?
200 - 800 ft
What is a beam bridge's span?
< 250 ft
What is a cable-stayed bridge's span?
2800 - 5000 ft
What is a suspension bridge's span?
2000 - 7000 ft
What are the advantages of an arch bridge?
Strong under compression, great natural strength
What are the advantages of a beam bridge?
Withstands compression, resists tension, simple, cheap
What are the advantages of a cable-stayed bridge?
Fast to build, less cable than suspension, very strong, long span
What are the advantages of a suspension bridge?
Very long span, very strong, evenly distributes load
What are the disadvantages of an arch bridge?
Short span, cracking material, many supports, expensive
What are the disadvantages of a beam bridge?
Shortest span, many supports
What are the disadvantages of a cable-stayed bridge?
Shorter span than suspension, pretty expensive
What are the disadvantages of a suspension bridge?
Sways in wind, very expensive, lightweight roadway that needs trusses
When a force curves a material by squeezing one side together so that the other stretches apart.
The weight of the structure itself, including anything permanently attached to it
The weight of the objects on the structure which are not part of it
THIS SET IS OFTEN IN FOLDERS WITH...
REAL CHAPTER 3 TEST
Measurement and Statistics
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