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WorksheetsAICE Marine Seafloor Period 2
Total questions: 25
Worksheet time: 17mins
What are some characteristics of the mantle?
Thick, viscous, hot, and flowing
Thick and made of granite
Thin but made with dense rock like basalt and iron
Liquid metal
According to the Theory of Plate Tectonics, how are plates able to move slowly relative to one another?
Earthquakes
Mid-ocean ridges
Volcanos
Convection Currents
Which of the following support the theory of plate tectonics?
Coastlines fit together like puzzle pieces
Symmetry of the magnetic stripes found along mid-ocean ridges
Geological formations matching between continents
Fossils of the same species found on different contients
What boundary is formed when two tectonic plates are moving away from each other?
Convergent
Divergent
Transform
Subduction
What boundary is formed when two or more tectonic plates come together?
Divergent
Convergent
Transform
Subduction
Which boundary occurs when two plates are moving in an antiparallel direction, creating friction?
Transform
Subduction
Convergent
Divergent
Which of the follow is formed at a convergent boundary?
Hydrothermal Vents
Volcanos
Mid-Ocean Ridges
Trenches
What is it called when the oceanic crust sinks under the continental crust at a convergent boundary?
Trench
Subduction
Asthenosphere
Lithosphere
Which mineral makes seafloor magnetic?
Magnetite
Basalt
Iron
Metal
Which of the following are the correct features of hydrothermal vents?
Found along trenches, very deep, high pressure, high temperature
Found along mid-ocean ridges, very deep, high pressure, low temperature
Found along trenches, very deep, high pressure, low temperature
Found along mid-ocean ridges, very deep, high pressure, high temperature
Which of the following is the correct formation of volcanos?
Formed opening in Earth's crust, hot gases and molten rock escape from surface, cools when hits warm water, and builds a volcano
Formed opening in Earth's crust, cool gases and molten rock escape from surface, cools when hits cool water, and builds a volcano
Formed opening in Earth's crust, cool gases and molten rock escape from surface, cools when hits warm water, and builds a volcano
Formed opening in Earth's crust, hot gases and molten rock escape from surface, cools when hits cool water, and builds a volcano
Which organism oxidizes hydrogen sulfide at hydrothermal vents to make glucose?
Riftia
Tevnia
Chemosynthetic Bacteria
Deep Sea Fish
How does succession occur at hydrothermal vents?
Tevnia, the bigger and faster growing tube worm, outcompetes Riftia, which is a slower growing tube worm
Riftia, the bigger and faster growing tube worm, outcompetes Tevnia, which is a slower growing tube worm
Riftia, the slow growing tube worm, outcompetes Riftia, which is a faster growing tube worm
Tevnia, the slow growing tube worm, outcompetes Riftia, which is a fast growing tube worm
Which minerals are forced up during hydrothermal vent formation?
Iron, Copper, and Basalt
Copper, Zinc, and Basalt
Basalt, Zinc, and Iron
Iron, Copper, and Zinc
Which of the following is the correct order for hydrothermal vent formation?
Cracks form, cold water seeps in, water is superheated by hot magma, minerals dissolve in the water which is then forced downwards, they solidify when they hit the cold water, produced chimneys
Cracks form, warm water seeps in, water is superheated by hot magma, minerals dissolve in the water which is then forced upwards, they solidify when they hit the cold water, produced chimneys
Cracks form, minerals dissolve in the water, cold water seeps in, water is superheated by hot magma, they solidify when they hit the cold water again, produced chimneys
Cracks form, cold water seeps in, water is superheated by hot magma, minerals dissolve in the water which is then forced upwards, they solidify when they hit the cold water, produced chimneys
Which of the following is the correct process of earthquake formation?
Subduction at divergent boundary, plates get stuck, pressure increases, plate slips and releases stored energy
Subduction at convergent boundary, plates get stuck, pressure decreases, plate slips and releases stored energy
Subduction at convergent boundary, plates get stuck, pressure increases, plate slips and releases stored energy
Plates spread apart at convergent boundary, plates get stuck, pressure increases, plate slips and releases stored energy
Define tsunami
Series of fast, tall ocean waves with an extremely long wavelength
One extremely large ocean wave that occurs suddenly and randomly
Rapid rotating water caused by conflicting currents
A violent storm with violent wind and heavy rain
What causes a tsunami
Warm water, moist air, low pressure, and upper-level winds
Large volume of water is suddenly displaced due to one of three factors an earthquake, volcano, or landslide
Underwater currents that are forced to rotate by an underwater obstacles or tides
Waves formed by a storm interacting shortening wave frequency causing them to join together
How are abyssal plains formed?
Rock is weathered and broken down from the continental shelf, these newly formed sediments deposit on the seafloor
Strong underwater currents break down newly formed rocks by the mid-ocean ridge into fine sediments that flatten the seafloor
Marine uplift causes minerals to build up in the ocean to later break down due to plate tectonics causing turbidity currents to settle fine sediments on the seafloor
Magma forced upward about Earth's crust, solidifies creating new uneven crust, sediments are added to the seafloor by turbidity currents, they settle to form flat regions
Define trench
A subduction zone that causes the continental crust to sink
A cave-in that is created at a divergent boundary
A ditch that was used in the past for warfare
Longest, narrowest, deepest part of the seafloor
What is the correct process of trench formation?
Convergent boundary where subduction occurs where the oceanic crust sinks under the continental crush creating a trench at the contact point
Divergent boundary where the plates separate creating a growing fissure in the seafloor creating a trench at the contact point
Convergent boundary where the continental crust sinks under the oceanic crust creating a trench at the contact point
Transform boundary where the plate slide past one another breaking the crust causing it to cave in creating a trench at the contact point
Which crust is thin but more dense because it's made from iron and basalt?
Core
Oceanic
Continental
Mantle
Define mid-ocean ridge
Subduction zone that forms trenches and causes earthquakes and tsunamis
Cooled magma that builds up to create chimneys
Marine uplift that forms a series of islands within the middle of the ocean
Continuous underwater volcanic mountain range responsible for seafloor spreading
What is the process of volcanos occurring at convergent boundaries?
two plates separate and subduction occurs, oceanic plate is recycled and melted, magma pushes through the continental plate, volcano forms
two plates collide and subduction occurs, oceanic plate is recycled and melted, magma pushes through the continental plate, volcano forms
two plates separate and subduction occurs, continental plate is recycled and melted, magma pushes through the oceanic plate, volcano forms
two plates collide and subduction occurs, continental plate is recycled and melted, magma pushes through the oceanic plate, volcano forms
What are wave characteristics and effects from tsunamis?
Slow speed, low amplitude, long wavelengths, water pulls away from shore before occurrence
High speed, low amplitude, long wavelengths, water pulls away from shore before occurrence
High speed, high amplitude, short wavelengths, water pulls away from shore before occurrence
High speed, high amplitude, long wavelengths, water pulls away from shore before occurrence
