Extreme Structures

How does the twisting shape of the Burj Dubai help break the strong desert winds?

• The wind doesn't have a solid surface to hit, so it glides around the tower.

• The tower rotates and the wind helps it turn.

• The shape allows the building to spring back and forth in the wind.

• The wind is reflected off the building and is blown back into the desert.

Which two countries does the Channel Tunnel, or the Chunnel, connect?

• England and the United Arab Emirates

• France and Japan

• Japan and England

• England and France

Why do a skyscraper's foundations need to be very deep and strong?

• to add more floors to the building

• to make room for parking garages

• to keep the building stable

• to help the building move and sway

Which structure was the most expensive to build?

• the Burj Dubai

• the Akashi-Kaikyo Bridge

• the Channel Tunnel

• They all cost the same.

What was "Extreme Structures" informational article mostly about?

• how to build very tall buildings

• three different extreme structures

• what architects and engineers do

• how much it costs to build extreme structures