Structures and Forces Review Time

Which of the following is NOT a function?

• Able to cross a bridge from point A to C skipping B

• Sheltering people from the elements

• Making people think of their emotions

• A beautifully constructed bridge that is blue and gold

What is torsion force?

• a squeezing force

• A twisting force

• a sliding force

• a pulling force

Bridge A collapsed because there was too much traffic on the bridge. The bridge collapsed due because

• it could not support its dead load

• it could not support its live & dead loads

• it could not support its live load

• the bridge was hit by wind

Tags

NGSS.MS-ETS1-1

NGSS.MS-PS2-2

Bridge B collapsed under its own weight. What cause the collapse?

• the live load

• the environmental load

• too much traffic on the bridge

• the dead load

Tags

NGSS.MS-PS2-2

What is tension?

• a sliding force

• a twisting force

• a squeezing force

• a pulling force

What is compression?

• a sliding force

• a twisting force

• a squeezing force

• a pulling force

What is shear force?

• a twisting and pulling force

• a twisting force

• a squeezing force

• a pulling force

What is a dead load?

• The weight of anything not permanently attached to the structure.

• Cars

• The weight of the structure.

• People

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

What is a live load?

• the deck

• The weight of anything not permanently attached to the structure.

• The weight of the structure.

• Cables and Towers

The weight of the things ON or INSIDE the structure is what kind of load?

• dead load
• live load
• critical load
• wind load