Geology quiz

Which of the following is not part of the scientific method?

Comparing new data to predictions of existing theories

Accepting explanations (or theories) without proof if they come from authoritative sources

Continuous questioning, testing and reassessment of current ideas

All of the above

A mineral is a solid material that

Has a a specific chemical composition

Has a specific internal (crystalline) structure

Is inorganic

All of the above

Do all diamonds have a higher hardness value than all quartz?

Yes

No, which has the higher hardness value depends on the size of the diamond

No, which has the higher hardness value depends on the color of the diamond

No, which has the higher hardness value depends on the color of the quartz

Quartz is

A silicate mineral

A nonsilicate mineral

Either a silicate or a nonsilicate mineral depending on the sample color

Either a silicate or a nonsilicate mineral depending on the sample shape

Calcite(Calcium Carbonate,CaCO3) is

A silicate mineral

A nonsilicate mineral

Either a silicate or a nonsilicate mineral depending on the sample color

Either a silicate or a nonsilicate mineral depending on the sample shape

Compared to a felsic magma, a mafic magma has

More Iron(Fe) and Magnesium(Mg)

Less silica(Si02)

More silica(SiO2)

Both a and b

Intrusive Igneous are

Formed on or above the surface and usually have coarse(large) mineral crystals

Formed on or above the surface and usually have fine(small) mineral crystals

Formed underground and usually have coarse(large) mineral crystals

Formed underground and usually have fine(small) mineral crystals

Eruptions of a felsic magmas are most often

Passive

Effusive

Explosive

None of the above

Eruptions of a mafic magmas are most often

Passive

Effusive

Explosive

None of the above

Pyroclastic flows may contain

Hot gases

Solid particles and rock fragments

Semi-molten lava

All of the above

Mechanical weathering is

The alteration of the chemical composition of a rock

The alteration of the mineral structure of a rock

The breaking of a rock into smaller pieces without changing the chemical composition or mineral structures of the rock

Both a and b

The dissolution (dissolving) of a rock is an example of

Mechanical weathering

Chemical weathering

Either chemical or weathering depending on the rock

None of the above

Sedimentary rocks are built from the products of

Mechanical weathering

Chemical weathering

Both a and b

None of the above

In the context of sediments and sedimentary rocks, the terms "well sorted" and "poorly sorted" refer to the

Sediment size range in the sample

Sediment mineral range in the sample

Sediment color range in the sample

Both a and b

Limestone is an example of a

Detrital (also called clastic) sedimentary rock

Chemical or biochemical (also called non-clastic) sedimentary rock

Silicate mineral

Both b and c

Metamorphic rocks are formed by:

Interaction with hot water as it flows through cracks in rocks

Heating rocks

Subjecting rocks to increased pressure

All of the above

Foliation in the context of metamorphic rocks is

A composition classification that distinguishes sedimentary from metamorphic rocks

A texture that is present in all metamorphic rocks

A texture classification that is defined by the existence of grain alignment or the existence of mineral banding within the rock

Both a and b

Which of the following is a common metamorphic rock (either foliated or nonfoliated)?

Granite

Limestone

Slate

All of the above

Which of the following is a common foliated metamorphic rock?

Quartzite

Marble

Gneiss

All of the above

Metamorphic grade is a specific reference to

The degree to which a parent rock changes during metamorphism

The quality of minerals in a metamorphic rock

The economic value of the metamorphic rock

The results from the metamorphic exam

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