Gass Testuy

A metamorphic rock has visible grains in layered texture, alt light&dark bands. What is it? A. Gneiss B. Schist C. Marble D. Slate

A

How might a chemical sedimentary rock form? A. By precipitation B. By river processes C. By wind D. By physical weathering

A

What is one way that sedimentary rock can change through the rock cycle? A. Can experiences weathering and lithification; form new sedimentary rock B. Undergo uplift to form metamorphic rock C. Can cool at surface to form metamorphic rock D. Be exposed to wind & water to form igneous rock

A

Which is true about metamorphism? A. Contact metamorphism occurs w/out an increase in pressure B. Contact metamorphism occurs w/out an increase in temperature C. Regional metamorphism occurs w/out an increase in pressure D. None of these are true

A

Why are foliated metamorphic rocks more likely to form as a result of a regional metamorphic that of contact met? A. Regional metamorphism creates directional pressure B. Contact metamorphism creates directional pressure C. Regional metamorphism creates equal pressure on all sides D. Contact metamorphism causes minerals to melt

A

As a glacier moves over the surface, what is the most substantial effect on the land? A. Picks up/transport rocks and sediments of all shapes and sizes B. Leaves behind rocks and sediments of all shapes and sizes C. Changes the chemical composition of the rocks, it passes over D. Tears holes in crust; rocks fall in and are recycled in mantle

A.

A river has silt-sized sediment. It accumulates & forms sedimentary rock. What type forms? A. Halite B. Shale C. Chert D. Chalk

B

A=100cm/s;B=5cm/s;C=0.5cm/s. To see deposition of silt, sand, pebbles, where should i throw each? A silt in A; sand in B; pebbles in C B. Silt in C; sand in B; pebbles in A C. Sand in A; pebbles in B; silt in C D. Sand in C; pebbles in B; silt in A

B

An igneous rock has large crystals and coarse texture. What do you know about its origin? A. Intrusive igneous rock that collected quickly B Intrusive igneous rock that cooled slowly

B

Geologist collects igneous rocks that contain felsic and mafic rocks. How are these classified? A. By texture B. By composition C. By method of formation D. By type of feature

B

These are ripple marks in sandstone. What environment did it most likely form in? A. A river environment B. Could have formed in any of these environments

B

What would explain a cave in a limestone cliff? A. Glacier tore limestone from cliff B. Acid rain dissolved limestone C. Exposure to air caused limestone to oxidize D. Snails and fungi secreted chemicals that reacted w/ limestone

B

A vesicular texture forms when A. Lava turns solid, crystals don't have time to grow B. Gas comes out of the lava or magma and forms bubbles C. Crystals start underground, finish growing after eruption D. Crystals settle out in layers on the bottom of magma chambers

B.

What type of change occurs when granite is weathered/erodes and is deposited w/pressure added? A. Sedimentary rock becomes igneous rock B. Igneous rock becomes sedimentary rock C. Sedimentary rock becomes new sedimentary rock D. Igneous rock becomes new igneous rock

B.

A rock has been split by tree roots and sediment is at base. Was the rock eroded by the roots? A. yes B. No, rock was broken down by roots C No, rock was weathered by roots D. No, sediment did not come from rock

C

How can tree roots be agents of chemical weathering? A. Roots break down into humus when they die B. Roots crack and break apart rocks in the ground C. Roots secrete acids, react w/& transform minerals in ground D. All of the above

C

How does carbonation cause weathering? A. By making groundwater less acidic B. By turning hard minerals in rock into soft rust C. By reacting w/minerals to make them more water soluble D. All of the above

C

How would an increase in rainfall affect the rate of weathering? A. Increase in flooding; weathering would decrease B. Increase in runoff; weathering would decrease C. Increase in groundwater; weathering would increase D. Increase in water vapor in atm; weathering would increase

C

Region is covered by thick layers of basalt that span 1000s of km. What is this feature? A. Lava flow B. Laccolith C. Lava plateau D. Volcanic neck

C

Why would foliated metamorphic rocks commonly be found in vicinity of folded mountains? A. Foliated rocks are associated with even pressure B. Foliated rocks are associated with contact metamorphism C. Foliated rocks are associated with regional metamorphism D. Foliated rocks are not associated with folded mountains

C

What type of rock will be found in an area around intrusive igneous rock? A. Clastic sedimentary rock B. Regional metamorphic rock C. Contact metamorphic rock D. Chemical sedimentary rock

C.

Which statement best describes chemical sedimentary rocks? A. Chemical and mechanical weathering breaks rock into fragments B. They can be made up of compacted organic material C. Evaporites form directly from a water source D. Sedimentary rocks form W/grain sizes that can be classified

C.

Which answer choice lists processes in the order in which they heppen to sediment? A. Deposition, Erosion, and weathering B. Erosion, deposition, and weathering C. Weathering, deposition, erosion D. Weathering, erosion, deposition

D

Which statement best describes the types of rock from which metamorphic rocks are formed? A. From igneous rocks only B. From sedimentary rocks only C. From igneous and sedimentary rocks D. From igneous, sedimentary, & metamorphic rocks

D