6. The forces operating at convergent plate boundaries are A. tensional B. exten

Question

6. The forces operating at convergent plate boundaries are A. tensional B. extensional C. lateral shearing (transform) D compressional 7. Which of the following is an example of a mineral resource? A. sand B. gold C. petroleum D. salt E. all of the above 8. Cleavage is defined as A. planes of weak bonds along which a mineral splits B. smooth, flat reflective surfaces C. surfaces of smooth, curved fracture D. planes of fracture resulting from strong bonds E. none of the above 9. Which is not a physical property used for identifying minerals.? A. color B. size C. luster D. streak 10. Which describes fracture as a physical property for mineral quality? texture of the mineral surface when it breaks. tendency of a mineral to break along planes of weak bonding. appearance or quality of light reflected from the surface of a mineral. color of a mineral in powdered form. A. B. D. 11. Which of the following is a common silicate mineral? A. quartz B. clay minerals Tetrahedron C. muscovite D. feldspar E. all of the above

Explanation / Answer

6) D. compressional

Compressional foreces cause the rock beds to fold each other. At convergent plate boundaries, the rock beds move each other by compressional forces. This cause folding and jointing. Tensional forces cause faulting.

7) E. all of the above

8) A. planes of weak bonds along which a mineral splits

9) B. size

10) B. tendensy of a mineral to break along planes of weak bonding

11) E. all of the above

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