Help please 7. The texture of a rock includes the of its constituent grains. a c

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Help please

7. The texture of a rock includes the of its constituent grains. a color b. size, shape, and orientation b. density d. chemical composition 8. Processes in the rock cycle can change rocks. b. metamorphic rocks into sedimentary rocks. c. sedimentary rocks into different sedimentary rocks d. All of the above occur in the rock cycle. 9. In a clastic sedimentary rock a minerals precipitate from evaporating water b. minerals crystallize from molten material. c. mineral grains can come from many different pre- viously existing rocks. d. All of the above may be true. 10. Glassy and porous textures are characteristic o a. igneous rocks. b. sedimentary rocks c. metamorphic rocks. d. All of the above 11. All of the following properties of a mineral can be observed or measured in a rock as easily as in a pure specimen except its a. color b. specific gravity c, luster d, cleavage. 12. In identifying a rock, a geologist (or geology studeno) must consider its a. color b. mineral conrenr and texrur c, shape d. size

Explanation / Answer

7] Option b is correct.

The texture of rock include is defined by its size, shape and orientation of its constituent grains.

8] Option d is correct.

Rock cycle is a group of changes in which Igneous rock can change into metamorphic and sedimentary rock. Metamorphic can change into sedimentary and igneous rock.

9] Option c is correct.

Clastic sedimentary rock is defined as a fragments of pre- existing rocks or minerals that come from previously existing rocks.

10] Option a is correct.

Glassy and porous texture is a igneous texture because it is the result of lava that has cooled very slowly.

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