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 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