Plate Tectonics and Continental Margins

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Questions and Answers

What feature forms when the bottom of the continental rise plateaus?

  • Abyssal plain (correct)
  • Continental shelf
  • Abyssal trench
  • Oceanic ridge

What is the process that creates oceanic ridges and causes the ocean basin to expand?

  • Sea floor compression
  • Seafloor spreading (correct)
  • Subduction
  • Plate convergence

What is the primary characteristic of active continental margins?

  • High levels of tectonic and seismic activity (correct)
  • Low levels of tectonic activity
  • Presence of long rivers and estuaries
  • Flat inland terrain

What is the name of the zone of mantle that consists of semisolid rock that is very hot and deformable?

<p>Asthenosphere (C)</p> Signup and view all the answers

What type of coastline is formed on active margins?

<p>Emergent coastlines (A)</p> Signup and view all the answers

What is the main factor that affects the density of ocean water?

<p>Salinity and temperature (D)</p> Signup and view all the answers

What is the name of the largest ocean basin?

<p>Pacific (B)</p> Signup and view all the answers

What type of volcano is formed when magma from the asthenosphere pushes up through a gap between tectonic plates?

<p>Underwater volcano (A)</p> Signup and view all the answers

What is the primary feature of passive continental margins?

<p>Low levels of tectonic activity (B)</p> Signup and view all the answers

What is the term that refers to the amount of salt dissolved in water?

<p>Salinity (B)</p> Signup and view all the answers

What is the term for the process of one plate being pushed beneath another?

<p>Subduction (A)</p> Signup and view all the answers

What is the term for the area where the ocean meets the land?

<p>Coastline (D)</p> Signup and view all the answers

What is the main difference between marine water and freshwater?

<p>Marine water has a higher concentration of dissolved salts (B)</p> Signup and view all the answers

What is the term for the zone of the ocean where sunlight penetrates?

<p>Photic zone (B)</p> Signup and view all the answers

Which type of plankton produces its own energy through photosynthesis?

<p>Phytoplankton (D)</p> Signup and view all the answers

What is the term for the ocean current that travels parallel to the shore?

<p>Longshore current (A)</p> Signup and view all the answers

What is the main cause of tsunamis?

<p>Abrupt disturbances such as earthquakes or underwater volcanoes erupting (A)</p> Signup and view all the answers

What is the term for elevated land areas adjacent to the sea and formed due to the erosion of adjacent, softer rocks?

<p>Headland (D)</p> Signup and view all the answers

What is the minimum sustained wind speed required for a storm to be classified as a hurricane?

<p>74 mph (B)</p> Signup and view all the answers

What is the term for the rapid and abnormally high rise of ocean water on a coastline due to a hurricane?

<p>Storm surge (A)</p> Signup and view all the answers

What is the term for the movement of water at different speeds over changing depths, causing the bending of waves?

<p>Wave refraction (B)</p> Signup and view all the answers

What is the term for towers of rock protruding from the water and separated from the land?

<p>Sea stacks (B)</p> Signup and view all the answers

What is the main difference between a shoreline and a coastline?

<p>Shoreline is where the water meets land, while coastline is where the island or continental edge meets the water (B)</p> Signup and view all the answers

What is the term for the natural disaster where large bodies of water are displaced towards a coastline, gaining height and momentum as the waters become shallower?

<p>Tsunami (B)</p> Signup and view all the answers

What is the primary factor that drives the movement of sand and sediment along the beach?

<p>Angled waves and the shape of the land (B)</p> Signup and view all the answers

What is the name of the process whereby sand and sediment are carried back to the ocean and guided along the coast?

<p>Longshore transport (C)</p> Signup and view all the answers

What is the term for the area of the beach where waves crash and swash extends up the shore?

<p>Swash zone (C)</p> Signup and view all the answers

What type of tide occurs when the sun and moon are at right angles to the earth's orbit?

<p>Neap tide (C)</p> Signup and view all the answers

What is the minimum wind speed required for a storm to be classified as a hurricane?

<p>74 mph (C)</p> Signup and view all the answers

What is the highest category on the Saffir-Simpson Scale?

<p>Category 5 (A)</p> Signup and view all the answers

What is the main reason why the energy carried by waves is strongest on the sides and ends of shoreline protrusions?

<p>Because of wave refraction (D)</p> Signup and view all the answers

What is the process by which sand and sediment are transported along the coast?

<p>Longshore drift (A)</p> Signup and view all the answers

What is the term for the process of depositing sand and sediment in an area over a period of time?

<p>Deposition (D)</p> Signup and view all the answers

What is the term for a narrow strip of land that projects out into a body of water?

<p>Headland (D)</p> Signup and view all the answers

What is the term for an elongated landform that extends from the coast into the mouth of an adjacent bay?

<p>Spit (D)</p> Signup and view all the answers

What is the term for the wearing away of coastal land and beaches?

<p>Coastal erosion (C)</p> Signup and view all the answers

What is the purpose of building a groin?

<p>To prevent sand from moving down the coast (B)</p> Signup and view all the answers

What is the term for a hard stabilization structure built offshore and parallel to the beach to protect the coast and create a calm area of water?

<p>Breakwater (B)</p> Signup and view all the answers

What is the term for a mound of sand that joins an island to the mainland?

<p>Tombolo (B)</p> Signup and view all the answers

What is the term for a sandbar that runs parallel to the coast, but remains separated by water?

<p>Barrier island (B)</p> Signup and view all the answers

What is the main characteristic of areas where continental and oceanic plates meet?

<p>High level of tectonic and seismic activity (D)</p> Signup and view all the answers

What is the function of the continental shelf in an ocean basin?

<p>It forms the rim of the ocean basin (D)</p> Signup and view all the answers

What is the primary difference between active and passive continental margins?

<p>Level of tectonic activity (A)</p> Signup and view all the answers

What is the result of tectonic activity around active continental margins?

<p>Emergent coastlines with steep, rocky cliffs (D)</p> Signup and view all the answers

What is the term for the process of one plate being pushed beneath another?

<p>Subduction (B)</p> Signup and view all the answers

What is the characteristic of ocean basins that allows for the formation of diverse marine life?

<p>Topographical features (D)</p> Signup and view all the answers

What is the primary characteristic of oceanic ridges?

<p>Continuous mountain chains located under the surface of the sea (B)</p> Signup and view all the answers

What is the process that creates oceanic ridges and causes the ocean basin to expand?

<p>Seafloor spreading (B)</p> Signup and view all the answers

What is the term for the movement of tectonic plates away from each other?

<p>Seafloor spreading (D)</p> Signup and view all the answers

What is the main factor that affects the density of ocean water?

<p>Salinity (C)</p> Signup and view all the answers

What is the process by which magma from the asthenosphere pushes up through a gap between tectonic plates?

<p>Underwater volcano formation (A)</p> Signup and view all the answers

What is the term for the continuous mountain chain located under the surface of the sea?

<p>Oceanic ridges (C)</p> Signup and view all the answers

What is the primary factor that drives the movement of sand and sediment along the beach?

<p>Longshore currents (D)</p> Signup and view all the answers

What is the term for the daily rise and fall of seawater driven by the force of gravity from mainly the moon?

<p>Tides (C)</p> Signup and view all the answers

What feature forms at the center of a hurricane?

<p>Eye (C)</p> Signup and view all the answers

What is the term for the process of moving sand and sediment parallel to the coast?

<p>Longshore transport (B)</p> Signup and view all the answers

What is the term for tides that occur during new moons, resulting in above-average high tides and below-average low tides?

<p>Spring tides (B)</p> Signup and view all the answers

What is the minimum sustained wind speed required for a storm to be classified as a tropical cyclone?

<p>74 mph (B)</p> Signup and view all the answers

What is the primary characteristic that distinguishes marine water from freshwater?

<p>High concentration of dissolved salts (B)</p> Signup and view all the answers

What is the term for the zone of the ocean where sunlight penetrates?

<p>Photic zone (C)</p> Signup and view all the answers

What is the name of the current that travels parallel to the shore?

<p>Longshore current (D)</p> Signup and view all the answers

What is the term for the movement of energy through water caused by the wind?

<p>Wind waves (A)</p> Signup and view all the answers

What is the term for organisms that can't move on their own and are transported by ocean currents?

<p>Plankton (C)</p> Signup and view all the answers

What is the term for the elevated land areas adjacent to the seas and oceans?

<p>Headlands (C)</p> Signup and view all the answers

What is the effect of the storm surge on the coastline?

<p>It causes erosion of the coastline. (B)</p> Signup and view all the answers

What is the main difference between a hurricane and a tropical storm?

<p>A hurricane has sustained winds of at least 74 mph, while a tropical storm has sustained winds of less than 74 mph. (C)</p> Signup and view all the answers

What is the highest category on the Saffir-Simpson Hurricane Scale?

<p>Category 5 (D)</p> Signup and view all the answers

What is the main cause of coastal erosion?

<p>Waves hitting the coastline at an angle (A)</p> Signup and view all the answers

What is the term for the bending of waves as they travel towards the shallow waters of the shore?

<p>Wave refraction (D)</p> Signup and view all the answers

What is the result of the erosion of headlands?

<p>The formation of sea arches (D)</p> Signup and view all the answers

What is the primary reason for the strong wave energy on the sides and ends of shoreline protrusions?

<p>Because of wave refraction (A)</p> Signup and view all the answers

What is the process by which sand and sediment are deposited in an area over a period of time?

<p>Deposition (A)</p> Signup and view all the answers

What is formed when a spit grows and creates a sandbar that completely closes access to a bay?

<p>A baymouth bar (A)</p> Signup and view all the answers

What is the purpose of building a groin?

<p>To prevent sand from moving down the coast (A)</p> Signup and view all the answers

What is the term for the wearing away of coastal land and beaches?

<p>Erosion (B)</p> Signup and view all the answers

What is a hard stabilization structure built near the beach and parallel to the shore?

<p>A seawall (C)</p> Signup and view all the answers

What is the process by which sand and sediment are transported along the coast?

<p>Longshore drift (D)</p> Signup and view all the answers

What is a mound of sand that joins an island to the mainland?

<p>A tombolo (C)</p> Signup and view all the answers

What is a narrow strip of land that projects out into a body of water?

<p>A headland (B)</p> Signup and view all the answers

What is a hard stabilization structure built offshore and parallel to the beach?

<p>A breakwater (B)</p> Signup and view all the answers

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