Materials

• Does a material break easily when bent if it is stiff and not flexible?

  Yes.
• Does a waterproof material allow water to pass through it?

  No, it does not
• What is buoyancy?


  Ability to float on water.
• 1. Wood can float on water
  2. Rubber is waterproof
  3. Fabrics are flexible and not waterproof.
  4. Ceramics are waterproof
  5. Glass is waterproof
  6. Metal is flexible and waterproof
  7. Plastics can float on water and waterproof