Can you help me with this study guide? 1- The rate of temperature change with de
ID: 297986 • Letter: C
Question
Can you help me with this study guide?
1- The rate of temperature change with depth inside the Earth is called_____.
A- Decompression
B- Solidus
C- Geothermal gradient
D- Magmatic gradient
2- A magma comprised of a high-proportion would be called _______.
A- Felsic
B- Intermediate
C- Mafic
D- Ultramafic
3- Magma composition can be changed through the process(es) of ______.
A- Partial melting
B- Assimilation
C- Mixing
D- All of the above
4- Which of the following phenomena will cause melting to produce magma>
A- Removal of volatiles
B- Increase the pressure
C- Heat transfer
D- Bogus question: the crust floats on a layer of perpetually molten rock, so no need to “produce” magma
5- Igneous rocks with a composition of high silica (proportionately) are called _____.
A- Felsic
B- Intermediate
C- Mafic
D- Ultramafic
6- Fine-grained mafic igneous rocks are called ______.
A-Granite
B- Diorite
C- Gabbro
D- Basalt
7- Mechanical weathering enhances chemical weathering by increasing the surface area of materials.
A- True
B- False
8- What is the name of the detrital rock consisting of rounded, gravel sized clasts?
A- Breccia
B- Conglomerate
C- Sandstone
D- Gravelstone
9- Which of the following factors is most likely to produce foliation?
A- Heat
B- Confining pressure
C- Differential stress
D- Fluid migration
10- The parent rock type for most foliated metamorphic rocks is ______.
A- Mica
B- Shale
C- Granite
D- Gneiss
Explanation / Answer
1) C. Geothermal gradient. Because Geothermal gradient is the rate of increasing temperature with respect to increasing depth in the Earth's interior. Mostly the rate of change of temparature is 1 °F per 70 feet of depth.
2) A.Felsic
3) D. All of the above
4) C. Heat transfer
5) A. Felsic
6) D. Basalt
7) A. True
8) B. Conglomerate
9) B. Confining pressure
10) C. Granite