Table of Contents
Which of the following is most effective in weathering rock?
Weathering and erosion, along with the gravity-driven effect called mass wasting, are the fundamental processes by which rock is broken down and removed, collectively called denudation. The most important agent in both weathering and erosion is water, in both its liquid and solid states.
What is associated with large landslides?
Which of the following is associated with large landslides? Large joints, fault zones, earthquakes, and heavy rains. If no water is involved, rocks can mechanically weather if they undergo ________ temperature change cycles.
What are the most common structural features of rocks?
The simplest and most common structural features of rocks at Earth’s surface are cracks or fractures, known as joints, along which little displacement (or slip) has occurred. Their most important feature is the absence of shear; no movement oc- curs parallel to the fracture surface.
Which processes usually work closely together with erosion?
Even more closely related to erosion is weathering, the breakdown of rocks and minerals at or near the surface of Earth owing to physical, chemical, or biological processes.
Which of the following processes is most closely associated with rusting group of answer choices?
Oxidation is the process which is most closely associated with rusting. Oxidation is the loss of electrons.
Which of the following is most closely associated with a mantle plume hot spot?
This complex is in the country of ________. Which of the following is most closely associated with a mantle plume? the island chain.
Which of the following is a type of mechanical weathering?
There are five major types of mechanical weathering: thermal expansion, frost weathering, exfoliation, abrasion, and salt crystal growth.
Which material is most resistant to chemical weathering?
Not only is quartz the most stable of the common rock forming minerals in chemical weathering, its high hardness and lack of cleavage make it quite resistant to mechanical weathering. Quartz is itself an agent of mechanical weathering in the form of blowing dessert sand.
What is the most important type of mechanical weathering?
There are many ways that rocks can be broken apart into smaller pieces. Ice wedging is the main form of mechanical weathering in any climate that regularly cycles above and below the freezing point (figure 2).
What are some features of sedimentary rocks?
Sedimentary structures include features like bedding, ripple marks, fossil tracks and trails, and mud cracks. They conventionally are subdivided into categories based on mode of genesis. Structures that are produced at the same time as the sedimentary rock in which they occur are called primary sedimentary structures.
What is a common structure found in metamorphic rock?
Metamorphic rocks are often intimately related to large-scale (kilometres of tens of kilometres) structural features of Earth. Such features include folds, nappes, and faults with a wide variety of geometries.
What are the features of metamorphic rocks?
Metamorphic rocks were once igneous or sedimentary rocks, but have been changed (metamorphosed) as a result of intense heat and/or pressure within the Earth’s crust. They are crystalline and often have a “squashed” (foliated or banded) texture.
Which rock layer is most resistant to weathering?
Igneous rocks are usually solid and are more resistant to weathering. Intrusive igneous rocks weather slowly because it is hard for water to penetrate them. Sedimentary rocks usually weather more easily.
What elements are common in the process of both erosion and weathering?
Both weathering and erosion are processes that wear away rocks. These two processes collaborate to break down rocks by removing or forcing out particles and sediment. Water is a force that helps both processes to occur.
How plants promote mechanical and chemical weathering but inhibit erosion?
Plants promote both mechanical and chemical weathering of rocks, but it inhibits erosion of the soil thanks to the roots. As roots of the plant grow deep, it crushes the rocks causing a mechanical weathering process.
Which of the following form of mass wasting is relatively fast and wet compared to the others?
Which of the following form of mass wasting is relatively fast and wet compared to the others? Mudflow. An earthflow is most conspicuous in ________ where a bulging lobe of material pushes out onto a valley floor.
Where is frost weathering common?
It is most pronounced in high-altitude and high-latitude areas and is especially associated with alpine, periglacial, subpolar maritime and polar climates, but may occur anywhere at sub-freezing temperatures (between -3 and -8 °C) if water is present.
What is the single most important weathering agent?
Water is the most important agent of chemical weathering. Two other important agents of chemical weathering are carbon dioxide and oxygen.
Which of the following is closely associated with the large system of ridges on the ocean floors?
Which of the following is closely associated with the large system of ridges on the ocean floors? Seafloor spreading, transform faults, rift zones, and upwelling of magma.
Which of the following features is not associated with volcanoes?
The correct answer is Fold. A volcano is a vent (opening) in the earth’s crust through which molten material erupts suddenly from a magma chamber below the surface.
What type of volcano is Crater Lake volcano?
About 6,850 years ago Mount Mazama, a stratovolcano, collapsed to produce Crater Lake, one of the world’s best known calderas. The caldera is about 6 miles (10 km) wide. The catastrophic pyroclasticeruption released about 12 cubic miles (50 cubic km) of magma to the surface.
Which of the following type of rocks would be most susceptible to being broken down by the weathering process known as dissolution?
-Quartz is only susceptible to dissolution. -Other minerals are removed by the wind because they have a lower density. Quartz is extremely resistant to all forms of chemical weathering.
What is associated with mechanical weathering?
Mechanical weathering, also called physical weathering and disaggregation, causes rocks to crumble. Water, in either liquid or solid form, is often a key agent of mechanical weathering. When water freezes, it expands. The ice then works as a wedge. It slowly widens the cracks and splits the rock.
What are the 4 types of mechanical weathering?
What are the types of mechanical weathering? Freeze-thaw weathering or Frost Wedging. Exfoliation weathering or Unloading. Thermal Expansion. Abrasion and Impact. Salt weathering or Haloclasty.