Examkin

Soru

Zorluk: KolayRocks, Minerals, and Soil

Match each physical property used to identify minerals with its correct scientific description.

  • LusterThe way light interacts with and reflects from the surface of a mineral specimen
  • CleavageThe tendency of a mineral to split smoothly along flat, parallel planes of atomic weakness
  • FractureThe tendency of a mineral to break unevenly into irregular, jagged, or curved surfaces
  • HardnessThe relative resistance of a mineral to being scratched by another substance

Cevap

Luster matches the reflection of light from a mineral's surface; Cleavage matches smooth splitting along flat structural planes; Fracture matches irregular or jagged breakage; Hardness matches resistance to being scratched.
Each physical property reflects a specific diagnostic test used in geology: luster evaluates optical reflection, cleavage evaluates breakage along planar atomic weaknesses, fracture evaluates irregular breakage patterns, and hardness evaluates scratch resistance.

Adım Adım Çözüm

1
Identify the optical property relating to surface light reflection
Luster is paired with the description of how light interacts with and reflects from the mineral surface.
Luster specifically classifies light behavior such as metallic sheen or vitreous shine.
2
Distinguish between flat planar breakage and irregular breakage
Cleavage is paired with smooth splitting along atomic planes, while Fracture is paired with irregular, uneven breakage.
Cleavage is dictated by crystalline planes of weakness, whereas fracture occurs when atomic bond strengths are uniform in all directions.
3
Identify the scratch-resistance property
Hardness is paired with the relative resistance of a mineral to being scratched.
Hardness evaluates bond strength against mechanical abrasion, as defined by the Mohs scale.

Anahtar Kavram

Diagnostic physical properties of minerals (luster, cleavage, fracture, and hardness)
Tahmini Süre:45s
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Konular

Rocks, Minerals, and Soil

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