quakes may last for as long as five minutes. The quake felt on the surface is always the result, not the cause of some underground geologic process, and in many cases the damage done is immense. The Greek word for shaking, and (when applied to the earth) earthquake, is seismos. Therefore, the science of earthquakes is called seismology (World Book Dictionary
plate tectonics: plate tectonics is a scientific theory describing the large-scale motion of 7 large plates and the movements of a larger number of smaller plates of the Earth's lithosphere, over the last 100's of millions of years. (Plate) boundaries: Plate boundaries are locations where two tectonic plates meet. There are three different types of plate boundaries (diverging,converging.transform).
AQA GCSE Chemistry Unit 1 C 1: Fundamental ideas: C 1.1. Atoms, elements and compounds: * All substances are made up of atoms. * Elements contain only one atom. * Compounds contain more than one atom. * An atom has a tiny nucleus in its centre, surrounded by electrons. C 1.2. Atomic structure: * Atoms are made up of protons, neutrons and electrons. * Protons and electrons have equal and opposite electrical charges. Protons are positively charged, and electrons are negatively
Austronesian Migration Theory propounds on the expansion of a group of people called the Austronesians from Asia into the Pacific by means of Taiwan 6,000 years ago. It was a theory proposed by Peter Bellwood a professor of Archeology. The theory largely explains the similarities in culture, language and physical attributes in different countries in the most Asian countries. The Austronesian migrations began from the Chinese mainland, reaching Taiwan first in 3500 BC then the Philippines by 3000
passage of elastic waves through the Earth. Seismic waves are waves of energy caused by the sudden breaking of rock within the earth or an explosion; these waves are the energy that is transmitted through the earth which is recorded on seismographs, which measures, amplifies, and records the motion of the ground (Endsley, 2016). Many different processes generate seismic waves, including earthquakes. An Earthquake occurs when there is a sudden movement of the Earth’s crust resulting from the building up
(Wegener, 1915). He suggested that all continents assembled into a single supercontinent, approximately 300 million years ago, and then according to the theory of plate tectonics, began to break apart 175 million years ago (Rogers et al., 2004) Immense geologic and geophysical evidence have been presented, by Wegener and others, to support this theory for the Late Triassic-Early Jurassic. However when analyzing the paleomagnetic data for the Late Paleozoic time, inconsistencies are present which suggest
EOSC 114 – Final Review Notes Get A’s or die trying. Jason Kim Unit 1: A Fragile System At least 3 earthquake recording stations are required to find the location of the earthquake epicenter. A single recording station can only calculate distance, but not direction; to cover all possibilities, a complete circle is drawn around that station. If only two earthquake recording stations are used, the circles will overlap at two points. Data from a third recording station will eliminate one of