Podcast
Questions and Answers
What is a common characteristic of material resources?
What is a common characteristic of material resources?
- They are only found in urban areas
- They are man-made objects
- They have financial value (correct)
- They are naturally occurring (correct)
What is the origin of metals found on Earth?
What is the origin of metals found on Earth?
- They were formed through chemical reactions
- They were created by humans
- They were formed in distant stars millions of years ago (correct)
- They were brought from other planets
What is a common material used to make utensils?
What is a common material used to make utensils?
- Wood
- Metal (correct)
- Plastic
- Rubber
What is a common source of material for furniture?
What is a common source of material for furniture?
What do gravel, metal, and rubber have in common?
What do gravel, metal, and rubber have in common?
What is the process by which metals are shaped into utensils?
What is the process by which metals are shaped into utensils?
What is a characteristic of furniture made out of particleboard?
What is a characteristic of furniture made out of particleboard?
What is a characteristic of plastics that makes them useful?
What is a characteristic of plastics that makes them useful?
What is the main element found in sand that is used to make glass?
What is the main element found in sand that is used to make glass?
What is a common use of glass in our daily lives?
What is a common use of glass in our daily lives?
What are long-chain molecules called that are used to make plastics?
What are long-chain molecules called that are used to make plastics?
What is an example of a type of plastic?
What is an example of a type of plastic?
How is glass typically made?
How is glass typically made?
What is a common use of wood?
What is a common use of wood?
What is the name of a common type of plastic?
What is the name of a common type of plastic?
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Study Notes
Material Resources
- Material resources are natural materials used for productive human purposes, giving them financial value.
- Examples of material resources include wood, plastics, metals, and rubber.
Everyday Objects and Material Resources
- Many everyday objects are made from material resources, such as:
- Utensils (knives, forks, spoons) made from metals found in rocks
- Furniture (tables, chairs, shelves) made from wood (oak, pine) or particleboard
- Plastics (beakers, bottles, trash cans) made from synthetic and organic materials (polymers) found in nature
- Glass (window panes, measuring jugs, light fixtures) made from silicon found in sand
Properties and Characteristics of Material Resources
- Metals are formed in distant stars, baked into the earth, and can be extracted, purified, and shaped using high temperatures.
- Wood comes from trees, which have been used by humans for tens of thousands of years.
- Plastics are synthetic and organic materials that can be bent and molded easily, made from various types of polymers (polyester, polypropylene, polyvinyl chloride, polyethylene).
- Glass is a transparent solid made from silicon found in sand, created by heating sand to high temperatures and shaping using a template.
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