This update contains several new questions from PTE Reading – Multiple choice, Single Answer question type, reported from very recent PTE exams. Our teachers have verified all questions and added correct answers to them. Practice these questions under time constraints to get the maximum benefit.
Free update: 2 questions
Full members only update: 14 questions
The origin of the volcano remains somewhat unclear; while some scientists believe it originated from an independent hotspot, most evidence indicates that it formed from the subduction of the oceanic Juan de Fuca and Gorda tectonic plates under the continental North American tectonic plate. Eruptive activity began about 600,000 years ago and has continued into the Holocene, the last eruption taking place 1,300 years ago. Unlike other volcanoes with shield shapes, which often erupt basaltic lavas, the Newberry Volcano has also erupted andesitic and rhyolitic lavas. A popular destination for hiking, fishing, boating, and other recreational activities, the volcano lies within 19 miles of 16,400 people and within 62 miles of nearly 200,000 people and continues to pose a threat to life. Still considered an active volcano, it could erupt and produce lava flows, pyroclastic flows, lahars, ashfall, earthquakes, avalanches, and floods.
Someone who researched the volcano 100 years ago, might have seen which of the following?
- Andesitic and rhyolitic lavas erupting from the volcano
- People enjoying hiking and fishing around the volcano
- Subduction of the oceanic tectonic plates
- Changes that occurred in the Holocene era
- People fighting the threat posed by the volcano
During the last decades, percolation theory, the mathematical study of percolation, has brought new understanding and techniques to a broad range of topics in physics, materials science, complex networks, epidemiology, and other fields. For example, in geology, percolation refers to filtration of water through soil and permeable rocks. The water flows to recharge the groundwater in the water table and aquifers. In places where infiltration basins or septic drain fields are planned to dispose of substantial amounts of water, a percolation test is needed beforehand to determine whether the intended structure is likely to succeed or fail.
Which of the following is not an area that has been impacted by percolation theory?
- Materials science
- Complex networks
- Water recycling
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