Multiple
Choice
Identify the letter of the choice that best completes the statement or answers the
question.
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1.
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Bridges are structures that cross rivers and lakes. They are one of the earliest forms
of architecture that have existed around the world.
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2.
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What
makes these structures special is how they are able to___________ their weight and the ___________ of
vehicles and ___________ traveling across their ____________. a. | strengthen, support, cattle, distances | c. | support, distance, weight,
length | b. | support, weight, people, spans | d. | contain, amount, people,
width | | | | |
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3.
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Bridges were built for one practical reason -- to cross waterways to get to the other
side!
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4.
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These structures that are elevated or raised must....... a. | support their own weight and the weight of people and
vehicles | c. | be stable enough to prevent accidental collapse and structural
failure | b. | support the weight of people and
vehicles | d. | All of the above | | | | |
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5.
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There is a special set of forces that helps to accomplish this goal. Force is defined
as the push or pull on objects. What are the names of the two forces that play upon a
bridge? a. | tension, friction | c. | compression,
friction | b. | force, friction | d. | compression,
tension | | | | |
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6.
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Compression is a force that ___________ objects together. a. | joins | c. | squeezes | b. | pulls | d. | contracts | | | | |
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7.
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Tension is the force that stretches or pulls objects apart. This is the opposite of
compression.
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8.
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Compression and tension cause objects to become ___________ or
longer. a. | taller | c. | disproportionate | b. | wider | d. | shorter | | | | |
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9.
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If
an object is being pulled (like chewing gum), it is under tension and therefore becomes
___________. a. | taller | c. | stronger | b. | wider | d. | longer | | | | |
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10.
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Together, tension and compression balance to help structures like bridges remain
standing. When the roadway of a bridge is being compressed, the underside of that roadway is in
tension. If these forces are not balanced, the structure will become weak and may
fall. a. | This is an accurate conclusion of how tension and compression work on
bridges. | b. | This is somewhat of an accurate conclusion of how the two forces, tension and
compression work upon bridges. | | | | |
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11.
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Bridges are designed to remain ________________ regardless of the changes in outside
forces. a. | standing | c. | secure | b. | upright | d. | All of the
above. | | | | |
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12.
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Bridges are classified as three types: a. | beam, arch, and
suspension | c. | upright, beam, arch | b. | arch, secure line,
suspension | d. | reverse arch, suspension, the really big ones. | | | | |
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13.
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Beams are... a. | secured pieces of wood or metal that hold
a bridge in place | c. | horizontal pieces of wood, metal, or stone that are used for
support. | b. | needed to securely fasten an abutment to the
beam | d. | Both A and C | | | | |
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14.
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Beam
bridges may also have larger beams called girders, piers, and trusses to give extra
support.
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15.
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The oldest type of bridge is
the... a. | arch | c. | suspension | b. | truss | d. | reverse arch | | | | |
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16.
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The
___________ brought the design from Asia to Europe thousands of years ago. These bridges are stronger
than beam bridges and can cross longer distances a. | Europeans | c. | Greeks | b. | Romans | d. | Aliens from Planet Arturus IV | | | | |
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17.
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The
__________ on top of an arch is supported by the ________ that are _____________ or built into the
ground a. | weight or load, sides, anchored | c. | mass, load,
secured | b. | load, abutments, fastened | d. | All of the
above. | | | | |
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18.
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Today arch bridges are usually built with _____________ arches to support the
____________ blocks that are _____________. These blocks are lifted into place with the use of
____________ a. | skeletal, concrete, hollow, cranes | c. | concrete, plastoflex, glued,
forklifts | b. | mortar, concrete, secured, heavy
equipment | d. | Both A and B | | | | |
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19.
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When
the blocks have been set in cement, the arch skeleton is ___________. a. | mounted | c. | secured | b. | removed | d. | destroyed | | | | |
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20.
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Arch
bridges can span up to ___________ feet.
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21.
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One
of the more common bridges seen today is the ________________ bridge. When these bridges were first
built in the ___________, they used ________________ and twisted bundles of wire. a. | arch, 1400's, securely fastened ropes | c. | tension, 1700's, iron
cords | b. | suspension, 1800's, iron chains | d. | big ones seen on the Discovery Channel,
1900’s, really strong fishing line. | | | | |
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22.
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The
cables are secured to anchorages or concrete blocks on either end of the bridge. Vertical cables are
added to the main cables for support. These cables also connect to the bridge deck.
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23.
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The
bridge's towers carry the weight of the bridge. This means that the towers are in a state of
_______________. a. | destruction | c. | tension | b. | construction | d. | compression | | | | |
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24.
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The
cables that hold up the roadway are in tension because they are stretched from the main cables to the
bridge deck.
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25.
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A Campanile is... a. | tall tower | c. | circular tower | b. | bell tower | d. | something placed on top of all
towers | | | | |
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Short
Answer
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26.
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Share 3 of the
“good” questions that would help you understand the important concepts and/or issues
raised within your readings and explorations this week.
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