GED Science TestPhysical ScienceEasy
A student is investigating the physical properties of a metallic wire. They want to determine how much the wire stretches when different weights are applied to it. Which property are they primarily testing?
- AHardness
- BConductivity
- CMalleability
- DDuctility
Show answer & explanationAnswer & explanation
Correct answer: D. Ductility
Ductility is the ability of a material to be drawn into a wire or stretched without breaking. The scenario directly describes testing how much a wire stretches under tension.
Why the other options are wrong
- A. Hardness is a material's resistance to scratching, indentation, or abrasion.
- B. Conductivity is the ability of a material to transmit heat or electricity.
- C. Malleability is the ability to be hammered or pressed into thin sheets without breaking.
Ductility
The ability of a material to be drawn out into a thin wire or stretched without fracturing.
- A type of plasticity.
- Allows materials to deform significantly under tensile stress.
- Common in metals like copper, gold, and aluminum.
Memory trick: Many materials have many methods to measure their marvelous makeup.