Chapter 4: Materials

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Chapter 4 Materials

• 1. Alloy a material that is a mixture of metals.

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• 2. Ceramic a material used for making pottery,
  bricks, and other products originated from the
  Greek word Kermos, meaning burnt stuff.

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• 3. Composite Combinations of different
  materials.

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• 4. Ferrous any metal or alloy that contains
  iron.

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• 5. Hardwood trees that have broad leaves, which
  they usually lose in the fall. They are also
  known as deciduous trees. Ex. Oak Tree.

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• 6. Opaque an optical characteristic of a
  material that allows no light to pass.

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• 7. Photosynthesis the process used by trees and
  plants to change water and carbon dioxide into
  carbohydrates using light as an energy source.

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• 8. Primary Material A natural material a
  material that exists in nature.

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• 9. Softwood Coniferous trees that retain their
  needlelike leaves and are commonly called
  evergreen trees (They stay green year-round). Ex.
  Christmas Tree - Pine

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• 10. Strength is a mechanical property that
  measures a materials ability to resist
  mechanical forces.

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• 11. Thermoplastic material that can be
  repeatedly softened by heating and hardened by
  cooling.

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• 12. Transparent An optical characteristic of a
  material that allows all light to pass.

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• 13. Translucent an optical characteristic of a
  material that allows some light to pass.

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• 14. Mechanical Properties the ability of a
  material to withstand mechanical forces.
  Mechanical Properties include
• Strength
• Elasticity
• Plasticity
• Hardness
• Toughness
• Fatigue