Here are the answers to the questions on your worksheet based on the history of the Tacoma Narrows Bridge:
What other name was Tacoma Bridge known by?
It was nicknamed
"Galloping Gertie" because the bridge deck would bounce and twist in the wind.
What was the main reason the bridge collapsed?
The main reason was
aeroelastic flutter (or resonance). The bridge was built too narrow and flexible, so strong winds caused it to twist violently until the cables snapped and it fell into the water.
How did the new bridge design differ from the collapsed bridge?
The new bridge was built with an
open truss structure (steel beams with holes) instead of solid steel plates on the sides. This allowed the wind to blow *through* the bridge rather than pushing against it, making it much more stable. It was also wider and heavier.
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Final Answer:
1.
Other Name: Galloping Gertie
2.
Main Reason for Collapse: Aeroelastic flutter caused by high winds (the bridge twisted itself apart).
3.
Design Difference: The new bridge used open trusses to let wind pass through, whereas the old one had solid sides that caught the wind.
Parent Tip: Review the logic above to help your child master the concept of bridge worksheet printable.
