3.2 Metallic Materials

• Types of metallic materials: steel, aluminium and copper
• Identifying steel in the immediate environment
• Identifying aluminium in the immediate environment
• Identifying copper in the immediate environment
• Checklist for identifying types of metallic materials
• Physical property: appearance of metallic materials
• Physical property: magnetism
• Physical property: conductivity of heat
• Physical property: conductivity of electricity
• Uses of metallic materials in the immediate environment and in production

• identify types of metallic materials used in the immediate environment
• describe the physical properties of metallic materials found in the immediate environment
• relate metallic materials to their use in the immediate environment
• appreciate the use of metallic materials in production

“How are metallic materials used in day-to-day life?”

The titles are open to everyone. Reading a lesson needs an account — sign in or create one.

1. Types of metallic materials
   40 min · 1 practice tasks · quiz
   Steel, aluminium and copper as the three types Grade 7 must identify in the immediate environment.
2. Steel in the immediate environment
   40 min · 1 practice tasks · quiz
   Identifying steel on gates, nails, mabati, tools and frames, including rust as a care clue.
3. Aluminium in the immediate environment
   40 min · 1 practice tasks · quiz
   Identifying aluminium in sufurias, window frames, foil and cans by light weight and no red rust.
4. Copper in the immediate environment
   40 min · 1 practice tasks · quiz
   Identifying copper as the reddish metal in cables, windings and some pipes, without burning insulation.
5. A checklist for identifying metals
   40 min · 1 practice tasks · quiz
   Preparing and using a checklist of colour, weight, rust, typical object and (preview) magnetism to name steel, aluminium or copper.
6. Appearance of metallic materials
   40 min · 1 practice tasks · quiz
   Describing lustre, colour and surface change (rust or dull film) as physical properties you can see.
7. Magnetism of metallic materials
   40 min · 1 practice tasks · quiz
   Testing which Grade 7 metals a magnet attracts: usually steel yes, aluminium and copper no.
8. Conductivity of heat
   40 min · 1 practice tasks · quiz
   Examining how heat travels through metals using a safe warm-water comparison, and linking it to pots and handles.
9. Conductivity of electricity
   40 min · 1 practice tasks · quiz
   Testing metals with a cell and bulb: current passes through clean metal, not through plastic or wood, never through a mains socket.
10. How metallic materials are used in daily life
    40 min · 1 practice tasks · quiz
    Matching steel, aluminium and copper to jobs in home, school and jua kali, and appreciating metals in production.