| A | B |
|---|
| Newton's Third Law | law that says for every action there is an equal and opposite reaction |
| inertia | tendency of an object to resist changes in motion |
| acceleration | measurement of how quickly an object is changing speed |
| Compression | pushing force which will squeeze material together |
| Tension | pulling force which will stretch materials by pulling their ends apart |
| torsion | twisting of the material by turning in opposite directions |
| shear | forces that bend or tear a material by pressing different parts in opposite directions at the same time. |
| Triangular prism | strongest type of prism |
| Beam | flat structure that will support a large load because the force of the load is carried down into the foundation |
| newton | unit for force |
| make sure material is balanced across the whole bridge | way of reducing torsion that acts on a bridge |
| triangle | shape used in truss bridges because it will not bend easily |
| suspension | type of bridge that has towers that anchor sets of wires to hold up the roadway |
| distribute the load, direct the forces along angled components, shape the parts to withstand the specific type of force acting on them | 3 keys to help structures withstand forces |
| live load | things that move in or on a structure |
