The movement of the plates A and C is a divergent plate boundary, which are two tectonics plates that move away from each other. What happens in rift valleys is that materials rise from beneath the earths surface.…
Pangaea: The primeval supercontinent, hypothesized by Alfred Wegner, that broke apart and formed the continents and oceans as we know them today; consisted of two parts- a northern Laurasia and a southern Gondwana.…
1. Evidence for the rearrangement of crustal plates and continental drift indicates that Australia was once part of an ancient super continent…
What type of plate boundary do earthquakes occur at? What type of plate boundary do volcanoes occur at?…
“Volcanic and seismic events are major pieces of evidence towards proving that plate tectonics theory is valid’ Discuss the extent to which you agree with this statement (40 marks)…
Seismic Wave are used to monitor changes in the ground elevation and variation in straight level near active faults…
Earthquakes are an example of seismic activity caused by the build-up of tension at the three types of plate boundaries: destructive, constructive and conservative. The pressure is suddenly released as the plates jerk past each other, sending out seismic waves from the focus that travel through different parts of the earth. The movement of convection currents within the Earth’s mantle causing the crust to become mobile which creates the different types plate margins, makes the cause due to physical factors. However human activity is suggested to be the cause of some minor earthquakes, for instance the building of large reservoirs where the water stresses the surface rocks or the subsidence of deep mine workings.…
Plate tectonics theory, which is the modern theory of the motions of Earth’s layer, explains how geological features, such as mountain ranges, continents, and bodies of water move and form. An important aspect of plate tectonics theory is that the outer layer of the earth is divided into plates which move across the earth’s surface. “These plates move relative to each other, typically at rates of 2-4 inches per year. As the plates move, they interact along their boundaries” (Plate Tectonics). In other words, the formation of geological features occur at the plate boundaries which is where plates slide and interact. There are four types of plate boundaries: divergent boundaries, convergent boundaries, transform…
There are three different types of earthquakes Convergent boundary which is where one plate is forced over another plate during movement creating a thrust fault. A Divergent boundary is when the plates are forced apart from each other, usually forming a Rift Zone. This is common underneath the water on ocean floors.An example is the Mid Atlantic Ridge. The last one is the Transform fault, unlike divergent and convergent, the plates here slip by each other. This is also called…
Most naturally occurring earthquakes are related to the tectonic nature of the Earth. Such earthquakes are called tectonic earthquakes. The Earth's lithosphere is a patchwork of plates in slow but constant motion caused by the release to space of the heat in the Earth's mantle and core. The heat causes the rock in the Earth to flow on geological timescales, so that the plates move slowly but surely. Plate boundaries lock as the plates move past each other, creating frictional stress. When the frictional stress…
10. Where divergent plate boundaries form beneath continental masses, low areas known as RIFT VALLEYS form.…
means converging is happening at other end of plate, for example Himalayan mountain range at…
3. Earlier than 200 million years ago, the continents were joined into one supercontinent called:…
Earthquakes occur when tectonic plates move and crash into one another, releasing energy ("The science of earthquakes," 2009). That energy then travels as waves, and is then recorded using an instrument called a seismograph ("The science of earthquakes," 2009). When one looks at the recording of the earthquake, it appears as if it is nothing more than a bunch of squiggly lines. However, those squiggly lines are important. They allow seismologists to determine the…
Earthquakes are vibrations of earth caused by the rapid release of energy. These earthquakes can be caused by faults in the Earth’s crust scraping against each other. Faults are constantly sliding past each other, but can occasionally have difficulty when the earth around these faults cracks, causing the path to become rugged. When they don’t slide easily, they cause tension. When the tension and pressure is released, this causes said vibrations that can be large enough to damage and destroy cities, or so small that they can only be detected by a seismograph.…