This document discusses different types of materials, their properties, and natural resources. It describes natural materials that come from natural resources like trees, soil, and metal. It also describes man-made materials that are created by humans, like glass, plastic, and synthetic cloth. The document lists several key properties of materials, including hardness, strength, elasticity, electrical conductivity, and absorbency.

2. Vocabulary
O1. buoyancy- the ability or
tendency to float in water or air
or some other fluid.
O2. absorbency- tending to absorb.
O3. conductivity- conducting heat.

3. O4. elasticity- state of quality of
being elastic.
O5. property- an essential or
distinctive attribute or quality
of a thing.
O6. strength- the quality or state
of being strong.

4. Types of Materials
Natural materials
•From natural resources
Man-made materials
•Materials made by man

5. What are the natural
resources?
OTrees
OSoil
ORubber trees
OMetal

6. Identify what the following
pictures of materials are
made up of

20. Natural materials
OWood
OClay
ORubber
OMetals
OWool and cotton

21. Man-made materials
OGlass
OPlastic
OSynthetic cloth

22. Properties of materials
OHardness- the ability of the material
to withstand scratches.

23. OStrength – ability of the material to
support heavy weight without
breaking or tearing.

24. OElasticity- the ability of the
material to return to its original
shape.

25. OElectrical conductivity- ability to
allow electricity to pass through it.

26. OAbsorbency- ability of the material
to absorb other substances
especially liquid.