Mystery #2-Invisible Forces

An engineer is someone who

• uses Legos to build things

• uses engines to build things

• uses Science to build things

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Charles Ellis designed which famous bridge

• The Tobin Bridge in Boston, Massachusetts (MA)

• The Tacoma Narrows Bridge, Tacoma, Washington (WA)

• The Golden Gate Bridge in San Fransisco California (CA)

What type of design was the Golden Gate Bridge?

• Suspension Bridge

• Arch Bridge

• Pillar Bridge

What type of force is used with a Suspension Bridge

• A pushing force

• A pulling force

• There is no force on a bridge

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Pick a truss bridge?

• 
• 
• 

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If you were able to complete the Activity to Build A Bridge, what type of bridge did you build? How many pennies used?

Answer explanation

Be sure to send in your picture of the bridge to Mrs. Lane or Mrs. Lucchesi through Class Dojo!

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If you were NOT able to complete the Activity to Build A Bridge, why not?

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Why was the Tacoma Narrows Bridge nicknamed "Galloping Gertie"?

• The bridge was as strong as a horse

• The bridge was named after Gertie G.

• The bridge would feel like crossing it was like riding a galloping horse.

What type of force is used with a Pillar Bridge?

• A pushing force

• A pulling force

• There is no force on a bridge

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What is one thing in Science that you have learned this year? What questions do you have?

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