Science

4. a joint that is designed to allow movement
6. the shape and size of a structure and the materials of which is it composed
12. a process in which pieces of metal or plastic are fused together by the application of heat
13. the materials and products found in nature
15. is designed to fix an object into place; the joint allows no movement
17. a structure, natural or manufactured, that is made by piling up of materials
18. a sticky substance , such as glue or epoxy cement, that is used to hold objects or materials together
19. an object with a definite size shape

1. (brazing) a process in which a melted material is applied to a different type of material
2. a type of structure that obtains its strength from a thin, carefully shaped outer layer
3. a type of structure in which a skeleton of materials supports the weight of other parts
4. an object or a structure that is made by humans
5. the weight carried or supported by a structure
7. the need for something built or manufactured to preform as expected for a long time
8. a process in which a layer material is pressed or glued onto other layers
9. a branch of philosophy that studies the principles of beauty
10. of a structure or object, its main purpose
11. of materials, made up of several different materials
14. a push or pull, or anything that causes change in the motion of an object
16. the characteristics of materials