Chapter 5
Material Resources
Terms
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- Composite
- a material formed from combining or mixing 2 or more different kinds of materials.
- silicates
- Sand, clay, and quartz are examples of
- Raw Materials
- such as wood, oil, cotton, and iron that are used to create products.
- Ceramics
- natural materials made from minerals called silicates
- Synthetic materials
- Materials not found in nature.
- elements
- Scientist have discovered 107 different simple substances called
- Plasticity
- the ability of a material to be formed into shape easily and to stay in that shape
- Softwoods
- Woods that come from coniferous trees (trees that have needles and cones rather than leaves.)
- Hardwoods
- Woods that come from trees that have broad leave, such as maple and oak trees
- Natural Resources
- Materials that are found in nature. Ex: land, water, air, plants, animals, and minerals.
- Ferrous
- containing iron. Ex: steel.
- Wood
- is a natural material that has been a valuable resource for thousands of years.
- Renewable Resources
- Materials that are replaceable after they are removed from nature. Ex: tress, plants, and animals.
- alloy
- a mixture of two or more metals to create a new, human-made metal.
- molecules
- the smallest part of a substance that still has the properties of that substance