Teacher:Write a phrase, the answer to which is present in the passage. The answer to this question should be completely and unambiguously found in the passage. The query must be about a single or multiple linked entities.
Teacher: Now, understand the problem? Solve this instance: When a force is applied to a body of a rock at plate boundaries, the rock may bend or break. Faults A break in the Earth's lithosphere where one block of rock moves toward, away from, or past another. That result suggests a powerful feedback between the forces that make the topography and the 'push-back' on the system exerted by the topography, they explained. While their model cannot accurately predict when and where earthquakes will occur in the short-term, it can help at better understanding or forecasting earthquakes over longer time spans, Dr. Holt said. The record of an earthquake, a seismogram, as recorded by a seismometer, will be a plot of vibrations versus time. On the seismograph, time is marked at regular intervals, so that we can determine the time of arrival of the first P-wave and the time of arrival of the first S-wave. Surface waves are produced when earthquake energy reaches the surface of Earth. 2 Features of Earthquakes Surface waves travel outward from the epicenter. The earthquake epicenter (EH pih sen tur) is the point on Earth's surface directly above the earthquake focus. Earthquakes result w4. hen forces push tectonic plates along faults in Earth's lithosphere. The buildup and release of stress along 5. inactive plate boundaries result in earthquakes. The most disastrous earthquakes occur along 6. divergent plate boundaries. The movement of rocks 7. in any direction along a fault results in an earthquake. A 8. normal fault forms where forces cause rocks to slide horizontally. Reverse9. faults form when forces pull rocks apart along a divergent plate Chapter 11: Earthquakes Section 1: Forces Inside the Earth Grade 6 Earth Science Mr. Norton Earthquakes Date Class 0 LESSON 1 A. B. What are earthquakes? are the vibrations in the ground that result from movement along breaks in Earth's lithosphere. 2. The forces that move breaks in the lithosphere. Where do earthquakes occur? 1. Most earthquakes occur along active also push and pull rocks along . These areas are plate boundaries, boundaries, generally in the middle of oceans or along the edges of a. Deep earthquakes occur along where a denser oceanic plate subducts into the mantle. b. A strong burst of shaking occurs during an earthquake. The second longest ever recorded earthquake occurred in 1964 in Alaska and lasted for four minutes (Figure 9.9). Foreshocks are small bursts of shaking that may precede a large earthquake. Foreshocks can occur days before the earthquake hits, or just minutes before. strongly related to lithospheric plate boundaries. This map shows plate boundaries and the global distribution of active volcanoes. (19601994). This map shows plate boundaries and the global distribution of earthquake activity (magnitude 4.5+, 19901995). Three kinds of differential stress occur. 1 Tensional stress (or extensional stress), which stretches rock; 2 Compressional stress, which squeezes rock; and. 3 Shear stress, which result in slippage and translation.
Student:
earthquakes result when forces push what