Watch the video to learn more about the different properties of materials.

 

Key concepts of Materials:

Strength

  • a strong material does not break easily

  • plastics, wood and metals are strong materials

  • strong materials are able to support heavy load without breaking

 

Flexibility

  • a flexible material can be easily bent without breaking

  • fabrics and rubber are flexible materials

 

Buoyancy

  • ability of an object to float on water

  • Materials (e.g. styrofoam and wood) with a lower density than water will float on water

  • Materials (e.g. metals and ceramics) with a higher density than water will sink in water

 

Absorbency

  • absorbent materials absorb water well
  • a waterproof material does not allow water to pass through

  • waterproof objects (e.g. rubber boots and glass windows) are used to keep people and things dry

 

Transparency

  • transparent materials allow most light to pass through them and

  • we are able to see through a transparent material

  • clear glass and clear plastics are transparent

  • materials do not allow light to pass through are opaque

 

Conductor of heat

  • good conductors of heat (e.g. metals) allow heat to pass through easily

  • other materials such as fabrics, wood and plastic are poor conductors of heat

 

Take this quiz to recap what you have learnt. Aim to reach the moon!