Types of Bridges
What type of bridge uses a long beam supported at each end?
What is a beam bridge?
What is the flat surface that people or cars travel on?
What is the deck?
What force pulls everything toward Earth?
What is gravity?
What did Roman aqueducts carry across land and valleys?
What is water?
In what country are living root bridges found?
What is India?
What kind of bridge uses a curved shape to spread weight outward?
What is an arch bridge?
What are the tall supports that hold up cables?
What are towers (or pylons)?
What force pushes materials together?
What is compression?
What shape did Romans use over land and valleys?
What is an arch?
What part of the tree is trained to grow into a bridge?
What are roots?
What bridge type has cables that connect directly from towers to the road?
What is a suspension bridge?
What supports a bridge from underneath in the water or ground?
What are piers?
What force pulls materials apart?
What is tension?
Why did aqueduct bridges often have many arches in a row?
To spread out weight and make the bridge stronger.
What kind of tree is used to grow these bridges?
What is a rubber tree?
What type of bridge uses many triangles for strength?
What is a truss bridge?
What strong lines support suspension bridges?
What are cables?
What force causes sliding between parts?
What is shear?
How did Roman aqueducts move water without pumps?
By using gravity and a gentle slope
How long can it take for a living bridge to become strong enough to use?
What is 10-20 years (or many more)?
What bridge type has cables that connect directly from towers to the road?
What is a cable-stayed bridge?
What parts connect the bridge to land on each end?
What are abutments?
Why must bridges be designed to handle wind?
Wind can push or shake bridges and cause damage
What building material did Romans invent that helped their bridges las so long?
What is Roman concrete?
made of lime, volcanic ash, water, small stones
Why do people train the roots instead of just letting them grow naturally?
Because guiding the roots helps them grow in the right direction and form a strong, usable bridge.