everything

• What is the raw material that most plastics come from?

  Oil
• Why is oil important for plastics?

  It is the primary raw material for plastics
• How was oil created according to the study material?

  From sea creatures and plants over millions of years
• Why is plastic considered a finite resource?

  Because it takes millions of years to produce more
• What happens to plastic when it ends up in landfill?

  It does not biodegrade or rot away
• What are the two major types of plastics?

  Thermoplastics and thermosetting plastics
• What is a characteristic of thermoplastics?

  They can be melted and reshaped repeatedly
• What is a characteristic of thermosetting plastics?

  They retain their form once heated and cooled
• What is urea formaldehyde used for?

  Electrical casings
• What is a property of polyester resin glue?

  It is waterproof and has good chemical resistance
• What is acrylic known for?

  Good impact strength and lightweight
• What is polythene commonly used for?

  Shampoo bottles and plastic bags
• What is PET known for?

  Excellent waterproof and moisture barrier
• What is PVC used for?

  Pipes and plastic window frames
• What is ABS commonly used for?

  High-quality toys like Lego
• What is a key feature of 3D printing?

  It builds up layers to form solid objects
• What is PLA made from?

  Plants
• What is plasticity?

  The ability to change shape without cracking
• What is durability in materials?

  The ability to withstand deterioration over time
• What are the two main types of joining metals?

  1. Permanent joining (welding, brazing)
  2. Non-permanent joining (nuts, bolts, screws)
• What is soldering?

  A weak join using low melting point metal
• What is the accuracy of a Vernier caliper?

  0.1 millimeter
• What is the purpose of a coping saw?

  To make curved cuts in wood
• What does a try square do?

  Draws lines at 90 degrees to an edge
• What is the function of a wood vice?

  To hold a piece of wood while working
• What is the purpose of a wood plane?

  To shave off thin strips of wood
• What is a mallet used for?

  To hit chisels without damaging wood
• What is a marking gauge used for?

  To mark lines parallel to a straight edge
• What is the function of a center punch?

  To create an indentation for drilling
• What are tin snips used for?

  To cut thin sheet metal
• What is the purpose of a hacksaw?

  To cut metal and plastics
• What is the main difference between permanent and non-permanent joining?

  Permanent cannot be undone easily
• What is brazing?

  A method of permanent joining metals
• What is the main characteristic of soldering?

  It uses a low melting point metal
• What are two tools you might use for metalwork?

  Steel ruler and a scriber
• What is a hacksaw used for?

  To cut metal and plastics
• What is a pair of tin snips used for?

  To cut thin sheet metal
• What are the two categories of joining metals?

  • Permanent joining: welding, brazing
  • Non-permanent joining: nuts, bolts, screws
• What is soldering?

  A weak join using low melting point metal
• What tool is typically used for soldering?

  An electrically heated soldering iron