Grade 10 Physics · Strand 1: Mechanics and Thermal Physics · Mechanical Properties of Materials
Mechanical Properties of Materials
A short Grade 10 Physics lesson for the CBE curriculum, part of Mechanics and Thermal Physics: Mechanical Properties of Materials. Learn it on any phone with notes and slides, then check yourself with a quick quiz and earn XP. This lesson is free.
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1. Corrugated iron roofing sheets (mabati) are made by rolling galvanised iron into thin, flat sheets without cracking. Which mechanical property makes this possible?
- A. Ductility
- B. Malleability
- C. Brittleness
- D. Stiffness
2. A piece of classroom chalk snaps suddenly when bent, with no noticeable bending beforehand. Which property of chalk does this show?
- A. Ductility
- B. Elasticity
- C. Brittleness
- D. Malleability
3. Why would an engineer choose steel rather than pure copper for bicycle frame tubes?
- A. Steel is more ductile, so it can be drawn into wires
- B. Steel has much higher stiffness, so the frame resists bending under the rider's weight
- C. Steel is more brittle, so it breaks less easily
- D. Steel is more malleable, so it can be hammered flat
4. What type of force acts on a ductile metal when it is drawn through a die to form a long wire?
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5. In reinforced concrete, steel rebar is placed inside the concrete. What is the main role of the steel?
- A. To resist compression because concrete is weak when pushed
- B. To make the concrete harder to scratch
- C. To carry the tensile load, since concrete is weak and brittle in tension
- D. To make the concrete more malleable
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