Name: ____________________________ Date: ________ Pd. _____ Midterm Unit 3 Review
Base your answers to questions 1 and 2 on
the data table below and on your knowledge of Earth science. The table provides information about four minerals, A through D.
(A) talc (B) selenite gypsum
(C) fluorite (D) quartz
1. Which mineral can scratch A, B, and C, but can not scratch D?
(A) garnet (B) galena (C) olivine (D) halite 2. The diagram below represents a sample of mineral A.
Mineral A is most likely
(A) have the same hardness (B) are the same color
(C) contain silicon and oxygen (D) break along cleavage planes
3. The minerals talc, muscovite mica, quartz, and olivine are similar because they
(A) Na (B) Al (C) Si (D) Pb
4. Which of the following elements is not found in Plagioclase Feldspar?
(A) hardness
(B) abundance in nature (C) arrangement of atoms
(D) exposure to the hydrosphere and atmosphere
(A)
(B)
(C)
(D)
6. Which model best represents the silicon-oxygen tetrahedron?
(A) extrusive igneous (B) intrusive igneous (C) clastic sedimentary (D) chemical sedimentary
Base your answers to questions 8 and 9 on
the drawings of six sedimentary rocks labeled A through F.
(A) volcanic eruptions and crystallization (B) compaction and/or cementation (C) heat and pressure
(D) melting and/or solidification
8. Most of the rocks shown were formed by
(A) rock salt and conglomerate (B) rock salt and breccia (C) sandstone and shale (D) sandstone and limestone
Base your answers to questions 10 through 13 on the diagram below, which represents a scheme for classifying rocks. The letters A, B, C and X, Y, Z represent missing labels.
(A) shale, slate, and schist
(B) sandstone, shale, and siltstone
(C) anthracite coal, metaconglomerate, and rock salt (D) breccia, gneiss, and rhyolite
10. Which rocks could be represented by circles X, Y, and Z?
(A) schist (B) anthracite coal
(C) marble (D) slate
11. If the rock in circle C formed from limestone, it would be called
(A) deposition and compaction (B) weathering and erosion (C) melting and solidification (D) faulting and folding
12. Which processes would form the type of rock that is represented by circle B?
(A) origin (B) density (C) color (D) age
(A) metamorphism of unmelted material (B) slow solidification of molten material (C) sudden upwelling of lava at a
mid-ocean ridge
(D) precipitation of minerals from evaporating water
14. Which process could lead most directly to the formation of a sedimentary rock?
(A) large forests
(B) a range of volcanic mountains (C) many terrestrial animals (D) a warm, shallow sea
15. Large rock salt deposits in the Syracuse area indicate that the area once had
Base your answers to questions 16 and 17 on the diagram below, which represents a rock composed of cemented pebbles and sand.
(A) The density of the pebbles and sand would decrease.
(B) The rock would become a plutonic rock composed mostly of quartz.
(C) The rock would become more felsic with a higher concentration of magnesium. (D) The pebbles would become distorted and the sand would be recrystallized.
16. Which change would most likely occur if this rock became buried deep within Earth's crust and was subjected to intense heat and pressure, but did not melt?
(A) an intrusive igneous rock (B) an extrusive igneous rock (C) a bioclastic sedimentary rock (D) a clastic sedimentary rock 17. This rock should be classified as
(A) granite (B) basalt (C) sandstone (D) limestone
18. Which rock most likely formed as a result of biologic processes?
(A) slowly, deep below Earth's surface (B) slowly, on Earth's surface
(C) quickly, deep below Earth's surface (D) quickly, on Earth's surface
(A) obsidian (B) rhyolite (C) gabbro (D) scoria
20. Which igneous rock is dark colored, cooled rapidly on Earth's surface, and is composed mainly of plagioclase feldspar, olivine, and pyroxene?
(A) a high concentration of silicon and a low concentration of iron
(B) a high concentration of iron and a low concentration of aluminum
(C) a high concentration of aluminum and a low concentration of iron
(D) a high concentration of aluminum and a low concentration of magnesium 21. Which relative concentration of elements is
found in a mafic rock?
(A) (B)
(C) (D)
(A) (B)
(C) (D)
23. Which graph best shows the relationship between the compositions of different igneous rocks and their densities?
(A) marble (B) schist (C) slate
(D) anthracite coal
24. The photograph below shows a large outcrop of rock composed primarily of visible
crystals of mica, quartz, and feldspar.
(A) A (B) B (C) C (D) D 25. The data table below lists characteristics of rocks A, B, C, and D.
Which rock is most likely phyllite?
(A) Hornfels is foliated; quartzite is nonfoliated.
(B) Hornfels contains plagioclase; quartzite does
not contain plagioclase.
(C) Hornfels is produced by regional metamorphism; quartzite is produced by contact metamorphism.
(D) Hornfels is medium grained; quartzite is fine
grained.
26. What is one difference between the
metamorphic rocks quartzite and hornfels?
(A) A (B) B (C) C (D) D
27. The diagram below shows an igneous rock intrusion in sedimentary rock layers.
At which point would metamorphic rock most likely be found?
(A) texture
(B) crystal or grain size (C) method of formation (D) mineral composition
28. Rocks are classified as igneous, sedimentary, or metamorphic based primarily on their
(A) in regions of recent volcanic activity (B) deep within the Earth's crust
(C) along the mid-ocean ridges
(D) as a thin layer covering much of the continents
29. Where are the Earth's sedimentary rocks generally found?
(A) more aligned (B) more angular (C) harder (D) land derived
30. One difference between a breccia rock and a conglomerate rock is that the particles in a breccia rock are
(A) igneous and metamorphic rocks, only (B) metamorphic and sedimentary rocks,
only
(C) sedimentary rocks, only (D) igneous, metamorphic, and
sedimentary rocks
(A) Magma must be weathered before it can change to metamorphic rock. (B) Sediment must be compacted and cemented before it can change to sedimentary rock.
(C) Sedimentary rock must melt before it can change to metamorphic rock. (D) Metamorphic rock must melt before it
can change to sedimentary rock. 32. Which statement about the formation of a
rock is best supported by the rock cycle?
(A) Most minerals crystallize at the same temperature.
(B) Most felsic minerals usually crystallize before most mafic minerals.
(C) Muscovite mica and quartz are the last minerals to crystallize as magma cools. (D) Biotite mica is the first mineral to crystallize as magma cools.
33. The diagram of Bowen's Reaction Series below indicates the relative temperatures at which specific minerals crystallize as magma cools.
(A) 6 g/mL (B) 24 g/mL (C) 34 g/mL (D) 60 g/mL
34. The diagram below represents the mass and volume of a mineral sample being measured. These measurements were used to determine the density of the mineral sample.
What is the density of this mineral sample?
(A) color, streak, and age
(B) origin, exposure, and fracture (C) size, location, and luster
(D) hardness, cleavage, and crystal shape 35. The internal atomic structure of a mineral
Answer Key Midterm Unit 3 Review
