Plate Boundaries: Questions And Answers

4. The right portion of Figure 1 describes general characteristics of the ocean bottom in coastal areas that are tectonically passive (not near a plate boundary). The left

This lab uses earthquake data to construct profiles of two convergent boundaries: the Tonga Trench and the Peru-Chile Trench. Where two tectonic plates converge, if one or both of the plates is an oceanic lithosphere, a subduction zone will form. When crust is formed at a mid-ocean ridge, it is hot and buoyant meaning it has a low density. As it spreads away from the ridge and cools and contracts, or becomes denser, it is able to sink into the hotter underlying mantle. When two oceanic plates collide, the younger of the two plates, because it is less dense will ride over the edge of the older plate. The density of the

There are three different types of plate boundaries. The first type of plate boundaries is, the spreading boundary. A spreading boundary is when two plates move apart. The spreading boundary is also known as a divergent boundary. The second type of plate boundary is a colliding boundary. A colliding boundary is when two plates come together, or collide. It is also known as convergent boundary. The third is, a sliding boundary. A sliding boundary is when two plates slip past each other moving in opposite directions. It is also known as transform boundary. Those were the three different types of plate

Mid-Atlantic Ridge F. Plate motion Motion across the mid-Atlantic ridge: the South American plate vs. the

III: My group had the geography map. Which was based off of elevation, so we had determine the highest and lowest points of theses plate tectonics. First, we observed all of the boundaries and determined the differences. Once we found some differences, we had to determine

There are three distinct types of plate boundaries existing, which are supported by geological observation, geophysical data, and theoretical considerations. Their names and categories are based on if adjacent plates move apart from each other (divergent plate margins), toward one another (convergent plate margins), or slip past one another in a direction parallel to their common boundary (transform plate margins) (Pitman, W.C., 2007).

To support the theory of continental drift is through topography, surveying the floors of oceans, charts of rock magnetism, and statistics on rock ages (Trefil & Hazen, 2010). At one time scientist believed that the deep ocean floors were flat; accumulating the sediment that progressively wore away from the prehistoric landmasses (Trefil & Hazen, 2010). However, they discovered steep-walled valleys and elevated highlands. This was evidences that just as the continents are transformed and are active, so to is the seafloor (Trefil & Hazen, 2010). The Mid- Atlantic Ridge, positioned in the central part of the Atlantic Ocean, is recorded to be the longest mountain range on this planet. Volcanoes, lava flow, and earthquakes are a source of

The creation of the Ring of Fire is very interesting too, it is the result of plate tectonics. These are huge slabs of Earth’s crust that fit together like the pieces of a puzzle. These plates can collide, stay apart, or move up right next to each other. The convergent plate boundaries are formed by plates colliding into each other. The heavier plates slide under the lighter plates causing a deep trench in the ocean floor, as we talked about earlier. If you went down into the ocean you’d be able to see a bunch of trenches in the ocean floor running parallel to corresponding volcanic arcs like the Ring of Fire. This allows islands and continental mountain ranges to be created. A divergent boundary is formed by

Stretching forces generated in the lithosphere immediately above the rising portion of a convection cell result in rifting of the lithosphere and ultimate formation of what type of plate boundary?

5) In general terms, describe the distribution of youngest and oldest crust in the Atlantic Ocean Basin.

4) This line is much like a line on a geologic topo map. Explain the similarity.

12. List the three types of plate boundaries and describe the relative motion at each of them.

Earthquakes, volcanoes, mountains and the Earth’s crust are unique yet have one common denominator; the amazing topic of plate tectonics. Plate tectonics has a place or specifically places a role in each of these natural wonders of the world. In the following, Team C will discuss the theory of plate tectonics and how the theory shaped the form and composition of the movement within the Midwest region of the United States. A discussion of various geological events and the types of rocks that formed because of these events will also be covered including the importance of the economic value of these rocks to the Midwest region

A) along a mid-ocean ridge B) along the length of a deep mantle plume C) along a transform fault D) along a subduction zone 11) Deep ocean trenches are surficial evidence for ________. A) rifting beneath a continental plate and the beginning of continental drift B) sinking of oceanic lithosphere into the mantle at subduction zones C) rising of hot asthenosphere from deep in the mantle D) transform faulting between an oceanic plate and a continental plate 12) Plates are sliding past one another horizontally along a ________ plate boundary. A) Transform B) convergent C) divergent D) subduction 13) The true colour of a mineral as seen in its powdered form is called it's ________. A) Birefringence B) chatoyancy C) iridescence D) streak

7. What is the relationship between plate tectonics and the ocean floor—seafloor spreading, for example?