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Materials - Coggle Diagram

- - - - Strong Materials:
        can hold Wt of Many loads
        without breaking
        
        Metal
        
        Wood
        
        Plastic (certain types)
        
        Strongest material: can hold Most number of weights
        Before breaking
        
        Rubber
      - Weak Materials:
        can only hold Wt of Few loads
        Before breaking
        
        Glass (shatters easily)
        
        Paper (tears easily)
        
        Tissue paper
        
        Ceramic (breaks easily)
        
        Cotton
    - - Keep adding weights of constant mass on middle of material
        until material breaks
      - Max amt of weights a material can hold before breaking
        is the strength of the material
      - Thickness and size of each material must be the same
  - - - Flexible:
        can be Bent Easily
        
        Fabric (cotton, silk, nylon etc)
        
        Rubber
        
        Plastic (certain types
      - Inflexible / Stiff:
        Cannot be bent easily
        
        Wood
        
        Metal
        
        Glass
        
        If an inflexible material is thin enough, it can be flexible
        Eg: Springs are flexible although made of metals
    - - Place a load(same mass) on rods/sheets of diff materials
        and measure the dist. the rod/sheet bent
      - The greater the dist. bent, the more flexible the material
  - - - Absorbent Materials: allows water to enter
        and be trapped in the material
        
        Sponge
        
        Fabric
        
        Paper / Tissue Paper
      - Waterproof Materials:
        Do not absorb any water
        
        Metal
        
        Glass
        
        Wood is Water Resistant but NOT waterproof.
        Some water can enter wood and cause fungi to grow on them
        
        Rubber
        
        Plastic
    - - Strips of diff materials with same length and thickness
        are dipped into water on one end.
        water will be absorbed and travel up the strip
      - Absorbent material: High water marking
      - Waterproof: No water marking
  - - - Float On Water
        
        Styrofoam
        
        Plastic
        
        Wood
      - Sink On Water
        
        Metal
        
        Glass
        
        Stone
    - - Place material in a basin of water to see of they float on water
      - Weights can be added to material that floats
        to test how well material floats on water
  - - - Opaque:
        allows NO light
        to pass through
        
        Wood
        
        Metal
        
        Cardboard
      - Translucent:
        allows SOME light
        to pass through
        
        Frosted glass
        
        Tracing paper
        
        Rice paper
      - Transparent:
        allows MOST / ALL light
        to pass through
        
        Clear plastic
        
        Clear glass
    - - A light source will shine on diff material placed at equal dist,
        a light sensor placed behind the sheet
        will measure the amt of light passing though