ACTIVITIES
1. 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 trunk →wood →bedside table
2. Classify the following materials into the correct group (animal, plant or mineral): wool, marble,
linen, clay, cork, sand, silk.
3. Name five natural materials and five processed or artificial materials.
4. Copy the following table into your exercise book and match each material to its group:
MATERIAL GROUP
Lycra Stone
Steel Ceramic
Silk Woods
Latex Metals
Brass Plastics
Slate Textiles
Cork
5. Silk is a textile material of natural origin. Do you know where it comes from? Do a search for
informa- tion and write down what animal it comes from and explain how it is produced.
6. What material or materials would you use to make the following objects? A shoe, a partition
wall, a streetlight. What conditions does each one have to meet?
7. What material would you use to build the following objects? Why?
a) Chair: plastic or wood?
b) Earrings: silver or aluminium?
8. 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.
9. Draw a chart that includes all the properties we have seen in this section.
10. What type of material would you use to soundproof the music room at your school? Why?
11. What does felling mean? When should a tree be felled?
12. Why do you think it is important to dry wood after sawing and before we use it?
13. What are the differences between a piece of furniture made from softwood and one made
from hardwood? Why?
14. Wood is a sound conductor, but cork, which is a wood derivative, is a sound insulator.
Indicate a use for wood as a sound conductor and a use of cork as a sound insulator.
15. Classify the following elements as natural woods or processed woods: cork, plywood, pine,
ebony, beech, ash, fir, chipboard, cardboard, lime.
