Earth Sciences Midterm |66
Exam 1|Test Skills
Cooler, older, oceanic lithosphere sinks into the mantle at ______ . - ✔ ✔
subduction zones along convergent plate boundaries
Correct statements - ✔ ✔ 1. Magmas crystallize to form igneous rocks.
2. Igneous rocks can undergo metamorphism.
3. Metamorphic rocks may melt to become magma.
4. Igneous rocks may undergo weathering and produce sediments.
Diorite - ✔ ✔ Texture: Phaneritic
Composition: Intermediate
Gabbro - ✔ ✔ Texture: Phanertic
Composition: Mafic
Garnet Mg3Al2(SiO4)3 - ✔ ✔ Silicates
Gypsum CaSO4*2H2O - ✔ ✔ Sulfates
Halite (NaCl) - ✔ ✔ Halides
Hornblende and the other amphiboles have what type of silicate structure?
- ✔ ✔ double chains
In a porphyritic volcanic rock, which mineral crystals are the last to
crystallize? - ✔ ✔ matrix or groundmass
, In correct order from the center outward, Earth includes which units? - ✔
✔ inner core, outer core, mantle, crust
Malachite Cu2CO3(OH)2 - ✔ ✔ Carbonates
New oceanic crust and oceanic lithosphere are formed at _______ . - ✔
✔ divergent boundaries by submarine eruptions and intrusions of
basaltic magma.
Obsidian - ✔ ✔ Texture: Glassy
Composition: Felsic
Orthoclase KAlSi3O8 - ✔ ✔ Silicate
Pyrite (FeS2) - ✔ ✔ Sulfides
Pyroxene MgSiO3 - ✔ ✔ Silicates
Rhyolite - ✔ ✔ Texture: Aphanitic:
Composition: Felsic
Sphalerite (ZnS) - ✔ ✔ Sulfides
Sulfur (S) - ✔ ✔ Native elements
Which mineral is composed of silicon dioxide (SiO2)? - ✔ ✔ quartz
The __________ is a liquid, metallic region in the Earth's interior. - ✔ ✔
outer core
The ___________ is the relatively cool brittle plates of plate tectonics. - ✔
✔ lithosphere
Exam 1|Test Skills
Cooler, older, oceanic lithosphere sinks into the mantle at ______ . - ✔ ✔
subduction zones along convergent plate boundaries
Correct statements - ✔ ✔ 1. Magmas crystallize to form igneous rocks.
2. Igneous rocks can undergo metamorphism.
3. Metamorphic rocks may melt to become magma.
4. Igneous rocks may undergo weathering and produce sediments.
Diorite - ✔ ✔ Texture: Phaneritic
Composition: Intermediate
Gabbro - ✔ ✔ Texture: Phanertic
Composition: Mafic
Garnet Mg3Al2(SiO4)3 - ✔ ✔ Silicates
Gypsum CaSO4*2H2O - ✔ ✔ Sulfates
Halite (NaCl) - ✔ ✔ Halides
Hornblende and the other amphiboles have what type of silicate structure?
- ✔ ✔ double chains
In a porphyritic volcanic rock, which mineral crystals are the last to
crystallize? - ✔ ✔ matrix or groundmass
, In correct order from the center outward, Earth includes which units? - ✔
✔ inner core, outer core, mantle, crust
Malachite Cu2CO3(OH)2 - ✔ ✔ Carbonates
New oceanic crust and oceanic lithosphere are formed at _______ . - ✔
✔ divergent boundaries by submarine eruptions and intrusions of
basaltic magma.
Obsidian - ✔ ✔ Texture: Glassy
Composition: Felsic
Orthoclase KAlSi3O8 - ✔ ✔ Silicate
Pyrite (FeS2) - ✔ ✔ Sulfides
Pyroxene MgSiO3 - ✔ ✔ Silicates
Rhyolite - ✔ ✔ Texture: Aphanitic:
Composition: Felsic
Sphalerite (ZnS) - ✔ ✔ Sulfides
Sulfur (S) - ✔ ✔ Native elements
Which mineral is composed of silicon dioxide (SiO2)? - ✔ ✔ quartz
The __________ is a liquid, metallic region in the Earth's interior. - ✔ ✔
outer core
The ___________ is the relatively cool brittle plates of plate tectonics. - ✔
✔ lithosphere
