The Rocks and Minerals Test consists of 18 questions. Correct answers will be provided after your answers have been submitted.
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1 | |
Quartz is a mineral because it is |
| | A) | a white rock. |
| | B) | natural, inorganic, and has a crystalline structure. |
| | C) | an element. |
| | D) | composed of more than one element. |
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2 | |
Granite is a rock because it is |
| | A) | made up of several minerals. |
| | B) | natural, inorganic, and has a crystalline structure. |
| | C) | made up of several different elements. |
| | D) | found on the earth's surface. |
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3 | |
One of the following mineral properties can be determined by observing, rather than doing something to a sample. |
| | A) | streak |
| | B) | fracture |
| | C) | luster |
| | D) | hardness |
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4 | |
When hit with a hammer, most minerals will |
| | A) | reveal mineralís streak. |
| | B) | fracture along irregular surfaces. |
| | C) | break along smooth cleavage surfaces. |
| | D) | reveal mineralís hardness. |
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5 | |
An igneous rock that formed by rapid cooling will probably have crystals that are |
| | A) | large. |
| | B) | small. |
| | C) | middle-sized. |
| | D) | mixed large and small sizes. |
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6 | |
Materials that settle out of water are known as |
| | A) | mud. |
| | B) | sand. |
| | C) | sediments. |
| | D) | hard water. |
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7 | |
In which type of rock would you expect to find fossils? |
| | A) | granite |
| | B) | obsidian |
| | C) | shale |
| | D) | marble |
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8 | |
A rock made up of cemented sand grains is |
| | A) | conglomerate. |
| | B) | quartzite. |
| | C) | shale. |
| | D) | sandstone. |
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9 | |
Which of the following does not belong with the others? |
| | A) | shale |
| | B) | sandstone |
| | C) | marble |
| | D) | limestone |
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10 | |
The elements that occur most frequently in the earth's crust are |
| | A) | carbon and oxygen. |
| | B) | hydrogen and oxygen. |
| | C) | magnesium and iron. |
| | D) | silicon and oxygen. |
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11 | |
One of the following cooled too quickly to allow crystals to form. |
| | A) | obsidian |
| | B) | quartz |
| | C) | halite |
| | D) | mica |
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12 | |
Heat and pressure can change slate to the metamorphic rock schist. What is probably formed when more heat and pressure acts on schist? |
| | A) | shale |
| | B) | slate |
| | C) | gneiss |
| | D) | marble |
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13 | |
Magma that cools slowly beneath the earth's surface produces |
| | A) | ore minerals. |
| | B) | intrusive igneous rocks. |
| | C) | fine-grained metamorphic rocks. |
| | D) | extrusive igneous rocks. |
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14 | |
A fine-grained igneous rock made of mostly orthoclase feldspar, quartz crystals, and a few ferromagnesian crystals is probably |
| | A) | rhyolite. |
| | B) | granite. |
| | C) | gabbro. |
| | D) | basalt. |
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15 | |
Igneous rocks are classified by |
| | A) | grain size and color. |
| | B) | density and texture. |
| | C) | mineral composition and texture. |
| | D) | mineral composition and hardness. |
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16 | |
Sedimentary rocks are classified by |
| | A) | sediment size or chemical composition. |
| | B) | mineral composition and color. |
| | C) | sediment size and hardness. |
| | D) | sediment size alone. |
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17 | |
Metamorphic rocks are classified according to |
| | A) | degree of foliation or recrystallization. |
| | B) | grain size or sediments color. |
| | C) | chemical composition or sediment size. |
| | D) | extent of melting. |
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18 | |
What process in the rock cycle are you performing if you mix your garbage in your garden. |
| | A) | weathering, sedimentation |
| | B) | melting |
| | C) | deformation, recrystallization |
| | D) | none of the above. |
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