Discuss each of the following physical properties of minerals: crystal form, color, streak, luster, hardness, cleavage, fracture, and specific gravity. What is responsible for the physical properties of minerals? Crystal form – Shape is determined by internal structure of mineral & most aren’t perfect b/c they don’t have enough space to form properly. Color- Least reliable. Streak- Color of a mineral in powdered form.
How many half-lives have passed since the crystal formed? A) 1 B) more than 1 but less than 2 C) more than 2 but less than 3 D) more than 3 Answer: B 4) Which of the following geologic observations would NOT bear directly on working out the sequence of geologic events in an area? A) inclusions of sandstone in a granite pluton B) a well-exposed dike of basalt in sandstone C) an unconformity between a granite and sandstone D) the feldspar and quartz contents of a granite Answer: D 5) The principle of ________ is the concept that ancient life forms evolved in a definite order and therefore their fossils can help determine the geologic ages of strata. A) superposition B) cross-cutting relationships C) fossil succession D) fossil assemblage Answer: C 6) Which of the following is an essential characteristic of an index fossil? A) The organism lived in a very specific environment or two, such as tropical volcanic islands.
______________________ 3. ______________________ 4. Name the two supplementary terrain features: 1. ________________________ 2. ________________________ 5.
An inward tilt during eruption is much steeper than that of re-inflation. 6. What are "vesicles"? (page 99, para 1) Tiny bubbles that have gas trapped in them after the solidifying of the magma after eruption. 7.
So we concluded that this Zinc did not contain significant amounts of iodide ion. There might have been slight amounts of iodide ion from the gray solids not being washed properly after it was isolated from the zinc iodine solution (the colorless solution after the completion of the reaction). Next time, we would need to wash the zinc granules more vigorously, to clearly identify that there is no AgI precipitation to indicate the presence of iodide
Phyllite. Like granite there were two types of phyllite found in the national park. Phyllite is a medium grade metamorphic rock with fine grain structure. It is formed from larger temperatures and heavier pressure effects than slate. In the Australian Alps, the phyllite would have formed in a layer lower than the lesser metamorphic rocks.
How do we know that the Earth has a liquid core? Why is the inner core solid even though it is hotter than the outer liquid core? We know that the Earth has a liquid core because of seismic waves. A type of seismic wave known as an "S" wave or Shear wave moves side-to-side in a shearing motion and does not propagate through liquid only through solid. "S" waves are often blocked or reflected by the inner core and it is therefore thought
Are You Fracking Serious? Teri Hensley Everest University EVS_1001 Definition for Posterity hy·drau·lic frac·tur·ing noun noun: hydraulic fracturing 1. the forcing open of fissures in subterranean rocks by introducing liquid at high pressure, especially to extract oil or gas. Natural Gas and How It Differs From Other Fossil Fuel Natural gas is a subterranean fossil fuel often found in massive deposits. The most immediate and significant detail that distinguishes it from other fossil fuels is that it is only in liquid form due to the geological pressure. Less relevant to the intention of this paper are it's differences in chemical composition and it's geographic conditions of occurrence.
Mass movements can be caused by increases in shear stress, such as loading, lateral pressure, and transient forces. Alternatively, shear strength may be decreased by weathering, changes in pore water pressure, and organic material. This paper presents a review of different parameters of slope’s stability under blasting-induced vibration. Similarity of blasting vibrations to earthquake motions has produced a predictable transfer of analytical techniques from earthquake engineering. This transfer allows quantifying the influence of blasting waves on the rock mass of the slope and on soil slopes.
c. hot fragments thrown a short distance from the volcano Which of the following volcanoes is generally the largest? c. shield volcano At what depth do gas bubbles have the most effect on magma? c. at very shallow levels, such as within the volcano A lava solidifies into nonvesicular basalt instead of vesicular basalt because: b. the magma has a low content of gas Shield volcanoes commonly have a. fire fountains b. all of the choices c. lava flows d. fissure eruptions Composite volcanoes are so called because they: c. ) are composed of lava flows, pyroclastic material, and mudflows What types of rocks would be most common in a composite volcano? a. felsic and intermediate lava flows and