<< Chapter < Page | Chapter >> Page > |
TYPE OF MATERIAL | Metal | Ceramic | Glass | Plastic | Fibre |
EXAMPLE | Iron copper | bricks ornaments | bottles ashtrays | plastic-bowls | cotton polyester |
(There can be many other examples)
Assignment 10:
4 (Individual)
The newspaper and flour are wet with water. Then they are mixed to make a new material, paper maché. Through this process a new mixture / compound is created.
By mixing certain materials we can create new products.
(There can be many other examples)
Assignment 11:
4 (Individual)
NATURAL MATERIALS | SYNTHETIC MATERIALS |
cotton, silk, wool linen, etc. | polyester, acrylic, viscose, glass fibre |
(There can be many other examples)
Type of Material | Metal: | Ceramics: | Glass | Plastic: | Fibre: |
Example | ____________ | ____________ | ____________ | ____________ | ____________ |
Mixtures / Compounds
New products are formed when we combine different materials. We can combine water, milk, sugar and coffee powder to make a cup of coffee. We can also combine substances in various ways by mixing them. The appearance and texture of the product usually differs from the original materials. Another example of a mixture is safety glass. A thin plastic layer is sandwiched between two layers of glass.
ASSIGNMENT 10 (INDIVIDUAL)
When we combine newspaper, flour and water we get papier-mâché. Make your own dinosaur in the following way.
Requirements:
Water
Flour
Metal wire
Pair of pliers
Newsprint
Paint and brushes
String
Procedure:
How to make a wire framework for the dinosaur.
Completion:
Conclusion:
In your own words describe the changes that occurred to the newsprint and the flour.
_____________________________________________________________________
_____________________________________________________________________
_____________________________________________________________________
_____________________________________________________________________
Nowadays most clothes are made from a mixture of materials, for example by combining synthetic and natural fibres.
Cotton is light and comfortable, but it creases easily and is difficult to iron.
Notification Switch
Would you like to follow the 'Natural sciences grade 6' conversation and receive update notifications?