Grade 10 metalwork – Project Quiz
1. What is the first step you should take when starting a metalwork project?
A clear plan and drawing with measurements guides marking out, cutting, joining and helps estimate materials and time before any physical work starts.
2. Which tool is best for marking straight lines on metal before cutting?
A scriber scratches fine, visible lines on metal for accurate marking out; chisels and saws are cutting tools, not for precise marking.
3. Which personal protective equipment is essential when grinding or cutting metal?
Safety goggles protect eyes from flying sparks and metal particles; the other items offer no eye protection and can be dangerous in the workshop.
4. How should a hacksaw blade be fitted for most general cuts?
Fitting the blade with teeth pointing forward lets you cut on the strong forward stroke; a tight blade with correct tooth direction gives accurate cutting.
5. Which tool is best for holding a workpiece firmly while you work on it?
A bench vice holds metal securely for sawing, filing, drilling or shaping, preventing slips and improving safety and accuracy.
6. Which measuring tool is used to measure the outside diameter of a round bar accurately?
A vernier caliper measures external diameters precisely to fractions of a millimetre, unlike a ruler or square which are less accurate for round bars.
7. Which material is most suitable for making a strong, low-cost garden gate frame?
Mild steel tubing is strong, easy to weld and inexpensive—making it ideal for gate frames; copper, glass and rubber are unsuitable for the frame structure.
8. Which method produces a permanent, strong joint by melting the parent metal and filler?
Welding melts the parent metals and often adds filler to form a fused joint that is strong and permanent, unlike nails or tape.
9. What is the purpose of flux when soldering or brazing metals?
Flux cleans oxides from metal surfaces so the solder or brazing filler wets and bonds properly; it does not cool, paint or strengthen the base metal.
10. When using a metal file, which stroke should be used to remove material effectively?
Most hand files cut on the forward stroke; pressing on the return dulls the file and reduces control, so lift the file on the return.
11. Which is the best way to protect mild steel from rusting in a school project?
Painting or galvanizing provides a protective barrier against moisture and oxygen, preventing rust; leaving it exposed or in water accelerates corrosion.
12. For joining thin sheets of metal in a workshop project with minimal heat distortion, which method is commonly used?
Spot welding joins sheet metal quickly with localized heat and little distortion; heavy arc welding can burn through thin sheets and nails are not suitable for metals.
13. Which tool should you use to remove sharp edges and burrs after cutting metal?
A file smooths sharp edges and removes burrs safely and accurately; pliers and chisels are not intended for finishing edges and a soldering iron is for heating solder.
14. What is the purpose of annealing a piece of metal during a project?
Annealing heats and then slowly cools metal to reduce hardness and increase ductility, making shaping and forming easier.
15. Which combination is correct for drilling a metal hole properly?
Marking with a centre punch prevents the drill bit wandering; a sharp metal twist drill and correct speed give clean holes without damage.
16. How do you estimate the amount of metal needed for a simple flat plate in a project?
Accurate estimation uses measurements to compute area and includes extra material for cutting errors and wastage, avoiding shortages.
17. Which adhesive is suitable for bonding small metal parts where welding is not possible?
Epoxy adhesives form strong bonds on metal and are used when welding is impractical; water, white glue and oil do not bond metal effectively.
18. What is the correct way to care for hand tools after use in the workshop?
Cleaning and oiling prevents rust and damage, keeping tools safe and ready for the next use; neglect leads to corrosion and unsafe tools.
19. What is the main function of a centre punch in metalwork?
A centre punch makes an indentation so the drill bit starts in the correct position and does not wander when drilling.
20. Why is a template used when making several identical parts in a project?
A template provides a pattern to mark and cut parts consistently, saving time and ensuring uniformity in repeated components.
21. Which metal is non-ferrous and will not rust like iron or steel?
Aluminium is a non-ferrous metal and is much less prone to rusting compared with iron or steel, which contain iron and corrode.
22. Which tool is most suitable for cutting sheet metal by hand?
Tin snips are designed to cut sheet metal cleanly by hand; wood saws, pipe cutters and kitchen knives are inappropriate and unsafe for sheet metal.
23. Why should you use a file card (wire brush) on a file regularly during use?
A file card clears metal chips lodged between teeth so the file cuts properly; clogged files become inefficient and can damage the work.
24. Which safe practice should you follow when using an angle grinder in a school workshop?
Using the guard, two hands and proper PPE reduces risk of injury from sparks, kickback and fragments; removing guards or unsafe handling is dangerous.
25. What is the purpose of a bill of materials (BOM) for a metalwork project?
A BOM details types and amounts of materials required so you can purchase and prepare everything before starting work, reducing delays and waste.