Memory Anchor:

• Super Challenge:

  Stretch:

  Challenge:

Key Questions:

1. How is soda-glass made?
   • Soda glass is made by heating a mixture of sand, sodium carbonate and limestone.
2. How is borosilicate glass made and what is the advantage of it over soda-glass?
   • Borosilicate glass, made from sand and boron trioxide, melts at higher temperatures than soda-lime glass.
3. How are clay ceramics made?
   • Clay ceramics, including pottery and bricks, are made by shaping wet clay and then heating in a furnace.
4. What is a composite and how are they made?
   • Most composites are made of two materials, a matrix or binder surrounding and binding together fibres or fragments of the other material, which is called the
5. What are three examples of composites?
   • Some examples of composites are: 1. carbon fibre 2. plywood 3. reinForced concrete 4. Ceramic