| A | B |
|---|
| Composite | combining two or more metals together to make a new material with improved characteristics |
| Steel & Concrete | best combination of materials to use when building a skyscraper |
| alloy | two or more metals together or one metal an another material |
| Concrete | Sand, gravel, cement |
| Natural resources | materials existing in nature |
| metals | Strong, durable materials that are easily shaped |
| Petroleum | used to make plastics |
| Hardwoods | maple, oak, birch,walnut, mahogany,hickory |
| Softwoods | pine,cedar |
| Copper | Considered the best metal conductor of electricity; good conductor of heat |
| Aluminum | light weight and rust resistant |
| Adhesives | Materials used to bond other materials together |
| Steel | A strong, durable metal composed of iron and carbon |
| Resists heat | Concrete |
| Commonly used for water pipes and wiring | Copper |
| Shearing & sawing | two processes used to separate materials by use of a wedge |
| Combining | Joining materials with bolts, rivets, nails, or zippers, etc |
| Thermal processes | Baking, freezing, boiling |
| Acoustical processes | used to blast kidney stones apart |
| Extruding | forcing a material through a die |
| Metal bottle caps, pipes, tubing, wire | Examples of extruding |
| Optical processes | Changing materials by light |
