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"Overcoming Earth's Obstacles" reading - 6th G

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  • Beam bridges are often used for __.
    d) crossing lakes
    b) short spans of distance
    c) crossing mountains
    a) long spans of distance
  • The supports of an arch bridge are called __.
    a) beams
    b) arches
    c) abutments
    d) suspensions
  • What machine is used today to dig large tunnels?
    a) Explosives
    d) Crane
    b) Borer
    c) Jackhammer
  • Bridges are usually __ to build than tunnels.
    b) cheaper and easier
    d) less easy but cheaper
    a) quicker but more difficult
    c) more difficult and more expensive
  • Tunnels can be used to carry water, dispose of waste, and protect cables.
    False
    True
  • Engineers only build tunnels for cars and trains, not for people.
    True
    False
  • The Akashi Kaikyo Bridge (Pearl Bridge) is located in __.
    b) United States
    d) Greece
    a) France
    c) Japan
  • Future engineers will continue to build larger and more advanced bridges and tunnels.
    False
    True
  • The easiest way to get from point A to B is __.
    c) over a mountain
    a) a circle
    d) a straight line
    b) under a river
  • Which type of bridge is often used for very long distances?
    a) Beam bridge
    c) Arch bridge
    b) Suspension bridge
    d) Aqueduct bridge
  • The Channel Tunnel connects __.
    c) Italy and Greece
    b) England and France
    d) Germany and Poland
    a) Spain and Portugal
  • Ancient Romans built many __ that are still standing today.
    d) tunnels under cities
    b) arch bridges and aqueducts
    a) suspension bridges
    c) steel bridges
  • The longest beam bridge in the world is the __.
    b) Lake Pontchartrain Causeway
    c) Golden Gate Bridge
    d) Channel Tunnel
    a) Brooklyn Bridge
  • Suspension bridges are weak and cannot carry heavy loads.
    True
    False
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