martes, 12 de abril de 2016

UNIT 5 - WE INVESTIGATE MATTER.

MATERIALS AND THEIR PROPERTIES
Materials have different origins, colours, shapes and properties.
  • Origin
    • Natural materials - (They come from living things.)
      • Mineral (gold)
      • Animal (wool)
      • Plant (wood)
    • Artificial materials - (They come from natural materials, but humans transform them.)
      • (paper)
      • (glass)
      • (plastic)
  •  Properties
    • Hard =/= Soft
    • Heavy =/= Light
    • Opaque =/= Transparent


CHANGES IN MATTER
  • Dissolving

  • Changes of state (in water)

FORCES
  • Contact forces
    • Push
    • Stop
    • Change shape 
  • Non-contact forces
    • Gravity
    • Magnets

SOUND

SOUND WAVES can travel through AIR, SOLID OBJECTS and WATER.

PROPERTIES OF THE SOUND
  •  Tone or pitch
    • Low pitch
    • High pitch 
  • Intensity or loudness 


    • Loud
    • Quiet