# data[].attributes.body
are materials taken directly from nature that we process into other materials to make products with.

# data[].attributes.body
we prepare or refine raw materials to obtain that.

# data[].attributes.body
any material used to construct an object.

# data[].attributes.body
when we process raw materials, they become that (also called manufactured materials).

# data[].attributes.headline
1.In your notebook, classify the following raw materials according to their origin (animal, plant or mineral): wool, marble, linen, clay, cork, sand, silk.

# data[].attributes.subject
1.In your notebook, classify the following raw materials according to their origin (animal, plant or mineral): wool, marble, linen, clay, cork, sand, silk.

# data[].attributes.body
Animal: wool, silk
Plant: linen, cork
Mineral: marble, clay, sand

# data[].attributes.headline
9.Explain the advantages and disadvantageds of making a chair out of plastic or wood and an earring out of silver or aluminium.

# data[].attributes.subject
9.Explain the advantages and disadvantageds of making a chair out of plastic or wood and an earring out of silver or aluminium.

# data[].attributes.body
-Chair :
Advantages-that it can be more resistant
Disadvantages-more expensive
-Earring
Advantages-more cheap
Disadvantages-no very resistant

# data[].attributes.headline
3. In your notebook, classify the following materials into the correct group and state whether they natural or processed: lycra, steel, silk, latex, grass, slate, cork.

# data[].attributes.subject
3. In your notebook, classify the following materials into the correct group and state whether they natural or processed: lycra, steel, silk, latex, grass, slate, cork.

# data[].attributes.headline
5.What material or materials would you use to make the following objects?Whats conditions does each one have to meet?

# data[].attributes.subject
5.What material or materials would you use to make the following objects?Whats conditions does each one have to meet?

# data[].attributes.body
-Shoe: nice to touch
-Partition wall: can build with and is available
-Streetlight: attractive
-Stay cables :stong

# data[].attributes.headline
2.Write the names of five raw materials in your notebook and give an example of a material we obtain from each and an example of a product made with each material.For example: Tree truck - wood - bedside table.

# data[].attributes.subject
2.Write the names of five raw materials in your notebook and give an example of a material we obtain from each and an example of a product made with each material.For example: Tree truck - wood - bedside table.

# data[].attributes.body
wool- clothes-socks
sand-glasses
clay-plates-glass of water
cork-plug of wine
marble-kitchen cuntertop

# data[].attributes.headline
6.Describe in detail the properties of the materials used to make these three everyday objects that allow them to perform their function: an umbrella, a chair, a frying pan.

# data[].attributes.subject
6.Describe in detail the properties of the materials used to make these three everyday objects that allow them to perform their function: an umbrella, a chair, a frying pan.

# data[].attributes.body
-An umbrella : weights as little as possible
-A chair : strong enough
-A frying pan : not contaminated or toxic

# data[].attributes.body
• Copper :
This is a bright, red coloured metal that has been used since ancient times to make ornaments, coins and even weapons.
• Tin :
Tin is a silver-coloured shiny metal that is very resistant to corrosion.
• Aluminium :
Aluminium is the third most common element in the earth's crust.
It is white, cheap and easy to recicle.
• Zinc :
It is bluish-white un colour and is INE of TVE least common metals

# data[].attributes.headline
22. Which metal might we find in both a Coca-Cola can and a Boeing?

# data[].attributes.subject
22. Which metal might we find in both a Coca-Cola can and a Boeing?

# data[].attributes.body
Aluminium

# data[].attributes.headline
18. Which material is tougher: stell or cast iron ?

# data[].attributes.subject
18. Which material is tougher: stell or cast iron ?

# data[].attributes.body
Cast iron

# data[].attributes.headline
10.Describe un detail the properties of the materiales used to make these three everyday objects that allow them to preform their function :a car headlight,a mattress,a golf club.

# data[].attributes.subject
10.Describe un detail the properties of the materiales used to make these three everyday objects that allow them to preform their function :a car headlight,a mattress,a golf club.

# data[].attributes.body
Car headlight : translucent
Mattress : deformability
Golf club : toughness

# data[].attributes.headline
11.Write down the advantages and disadvantages of using wood as a technical material. Base your list on the properties of wood and give reasons for your answer.

# data[].attributes.subject
11.Write down the advantages and disadvantages of using wood as a technical material. Base your list on the properties of wood and give reasons for your answer.

# data[].attributes.body
Advantages:

# data[].attributes.headline
12. In your notebook, indicate whether elements are natural woods, man-made woods or wood derivatives.

# data[].attributes.subject
12. In your notebook, indicate whether elements are natural woods, man-made woods or wood derivatives.

# data[].attributes.body
Natural woods : pine, ebony, beech, fir.
Man-made woods : plywood, chipboard, ash.
Wood derivares : cardboard, lime.

# data[].attributes.body
• Iron
When the percentage of carbon in the allow in less that 0.1%, we call this material iron.
• Steel
Steel is a ferrous material made mainly from iron with 0.1% to 2% carbon.
• Cast iron
Cast iron is made fron iron and 2% to 6.67% carbon.

# data[].attributes.body
Man-made wood :
• plywood : is used to make table-tennis paddles, boats, etc.
• chipboard : it is used in all types of furniture (especially kitchen cabinets)
Wood derivares :
• paper : sheets of paper are used for writing on and to make envelopes, wrappers, books, newspapers, photographs, etc.
• cardboard : it is commonly usted to make boxes for packaging.
•cork : it is used un bottle stoppers, as insulation, forma notice boards, etc.

# data[].attributes.body
• Stock forms of metals :
- plates
- sections
- ingots
• Classifying metales
Metals that contain mainly iron are calles ferrous metals. Metals that do not have iron in their composition are called non-ferrous metales.

# data[].attributes.body
• Main properties of metals ;
- Mechanical properties :
Hard, malleable, ductile and tough.
- Thermal properties :
Good conductors of heat, expande when temperatura rises and contractual whenit falls.
- Electrical and magnetical properties :
Good conductor of electic current, magnético behaviour.
- Other properties :
Rust easily, sound conductors, sólido at room temperature, heavy and dense, etc.