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Structures Video Crossword

Mr Camroux
Science 7
Across
When building Petronas towers in Malaysia, new floors were added from the ________.
__________ soil caused the lean of the Leaning Tower of Pisa.
New technology has allowed us to make bridges longer and ___________.
Engineers extended the life of the Tower by hundreds of years by __________ underneath it and removing soil.
Constructing pyramids requires incredible geometry and ________ along the way.
The Egyptian pyramids were built by workers hauling over 2 million ____________ and granite blocks.
The leaning tower of Pisa was built on soil that was _____ and wet.
Engineers used high-strength _________, 3x stronger than normal.
A suspension bridge transfers the load to the towers through the _______________.
Engineers must make sure that people in skyscrapers do not get __________.
Bridges transfer heavy _________ to the ground through the constant pushing and pulling on each of their parts.
Wind tunnels and computer ____________ help engineers test their designs.
The Tacoma Narrows bridge was poorly __________ to withstand the forces acting on it.
Water lying above the tunnel exerts enormous downward ________ and sometimes leaks down into the tunnel.
Down
Wind can cause a skyscraper to ___________ (topple over) or slide.
The tunnel described was for a pipeline to carry ___________ under the desert.
The land the leaning tower of Pisa was built on used to be a __________.
_________ is the basis of any tunnel-building project.
As the towers sway, the concrete __________ the energy and dampens (lessens) the movement.
New ___________ and procedures make it possible to build to greater heights.
Before collapsing, the Tacoma Narrows bridge experienced severe torsion, or __________ forces, caused by unbalanced wind pressures.
Bridges must be designed to withstand traffic, ___________, and the weight of the bridge itself. (2 words)
Tunnels are becoming more important as life above ground becomes more _____________.