Forces that squeeze things together are known as ______ stress.

When 2 materials try to slide by each other causing the material to tear, the stress is known as ______ stress.

When materials twist and bend, the forces are called ______ stress.

When a heavy load is put on the bridge, the material on top ______ while those on the bottom are acted on by ______ forces.

In modern bridges the two most often used materials are ______ and ______.

Thaddeus Hyatt discovered that a ______ ______ put near the bottom of a concrete beam would give more support for the beam.

Concrete is a mixture of ______, ______, ______, and ______.

When rods, wires, or cables are put inside a drying concrete beam and tightened before the concrete dries, the result is known as ______- ______ concrete.

The part of a bridge that rests on the ground is known as an ______.

The stone used in the top of a stone arch bridge is known as ______.

Bridges that hold the road surface by cables are known as ______ bridges, and usually used over ______distances.

When designing a bridge, four things must be considered: ______, ______, ______, and ______.

When a beam bridge uses a series of triangular shapes to support a beam, the bride is known as a ______ beam bridge.

Steel bridge parts are often in the shape of a box or an "I". These shapes are known as ______,