7.MS-ETS3-4 Forces and Bridges

What is compression?

• A force that pushes on or squeezes a material

• A force that pulls on an a material

• What happens when the force of tension overcomes an object's ability to handle tension

• What happens when the force of compression overcomes an object's ability to handle compression

What is tension?

• A force that pushes on or squeezes a material

• A force that pulls on an a material

• What happens when the force of tension overcomes an object's ability to handle tension

• What happens when the force of compression overcomes an object's ability to handle compression

What happens when the force of tension overcomes an object's ability to handle tension?

• Compression

• Tension

• Snapping

• Buckling

What happens when the force of compression overcomes an object's ability to handle compression?

• Compression

• Tension

• Snapping

• Buckling

What is a beam bridge?

• A bridge whose main structural element consists of a beam set across two or more vertical supporting members

• A framework of beams forming a rigid structure

• A steel or wooden beam in the shape of an I

• A bridge that has a roadway supported by cables that are anchored at both ends

A rigid, usually horizontal, structural element is called:

• Beam
• Pier
• Endeavor
• Force

Weight distribution throughout a structure is called:

• Truss
• Pier
• Cantilever
• Load

Three types of basic bridges are:

• Beam, Arch and Suspension
• Golden Gate, Hudson and Chattahoochie
• Brooklyn, London and Ambassador 
• George Washington, Mackinac and Seven Mile

The distance between two bridge supports, whether they are columns, towers or the wall of a canyon is called: 

• Truss
• Load
• Force
• Span

A rigid frame composed of short, straight pieces joined to form a series of triangles or other stable shapes is called a:

• Pier
• Beam
• Truss
• Bridge