8. The lithosphere and the crust are identical layers. There is no difference be
ID: 109624 • Letter: 8
Question
8. The lithosphere and the crust are identical layers. There is no difference between them at all.
• True
• False
9. What type of plate boundary is located here in the San Francisco Bay Area? •
• Divergent boundary •
• Subduction zone •
• Transform boundary •
• Convergent boundary
10. A mid-ocean ridge is created at: •
• Divergent boundaries •
• Subduction zones •
• Transform boundaries •
• Continent-continent convergent boundaries
11. What type of plate boundary are shallow focus earthquakes associated with? •
• Convergent •
• Divergent •
• Transform •
• All boundary types
12. The Mariana Trench is located at what type of plate boundary? •
• Convergent •
• Divergent •
• Transform •
• All boundary types
13. The east coast of the United States is known as an:
• • Active margin •
• Passive margin •
• Earthquake margin •
• Tectonic margin
14. Ocean trenches: •
• Are caused by divergence at divergent margins. •
• Parallel continents and island arc volcanoes. •
• Are created at transform boundaries during earthquakes. •
• Are typically only ~10 meters deep.
15. The portion of the continental margin that marks the true edge of the continent is: •
• Continental shelf •
• Continental slope •
• Continental rise •
• Abyssal plain
16. Submarine canyons are believed to be shaped primarily by: •
• Transform faults •
• Rifting •
• Turbidity currents •
• Converging ocean plates
17Sediments found on continental margins are called
Continental
Neritic
Oceanic
Pelagic
18Pelagic sediments are primarily found in the:
Continental shelf
Continental slope
Continental rise
Abyssal plain
19Calcium carbonate will dissolve at an equal rate to its supply at the CCD. What happens
below the CCD?
Calcium carbonate will still dissolve at an equal rate to its supply.
Calcium carbonate will dissolve at faster rate to its supply.
Calcium carbonate will dissolve at a slower rate to its supply.
20Radiolarian ooze is a type of _______________ sediment.
Continental
Oceanic
Neritic
Pelagic
21Water’s high heat capacity allows the ocean water to be:
Cooler than the land around it.
Warmer than the land around it.
The same temperature as the land around it.
Sometimes warmer, sometimes cooler than the land around it.
22What is “heat”?
It is thermal energy.
It results from thermal energy.
It is a measure of kinetic energy.
It is a measure of potential energy.
23Adjacent water molecules are held together by:
van der Waals forces
Covalent bonds
Ionic bonds
Hydrogen bonds
24The thermocline is a layer in the ocean that represents:
Density change due to mixing.
Density change due to salinity.
Density change due to temperature.
Constant density due to salinity.
25In ionic bonding, during the transfer of electrons between two neutrally charged atoms,
one electron moves from one atom to another. What are the new relative charges between the
two atoms?
The giving atom and receiving atom are both negatively charged.
The giving atom is now positively charged and the receiving atom is now negatively
charged.
The giving and receiving atom are both positively charged.
The giving atom is now negatively charged and the receiving atom is now positively
charged.
26.Air __________ at the horse latitudes and creates __________ pressure at the surface.
Sinks, high
Sinks, low
Rises, high
Rises, low
27.The force that causes the wind to blow is called:
Pressure gradient force
Friction
Coriolis forc
Centrifugal force
28.Thermohaline circulation is driven by
Density
Gravity
Latitude
Temperature
Wind
29.Which statement below is not correct concerning Coriolis force?
It causes the winds to deflect to the right in the Northern Hemisphere
It is strongest at the equator
It can cause winds to change direction, but not to increase or decrease in speed
It deflects winds in the opposite directions in the Northern and Southern Hemisphere
30.The California current is an
Eastern boundary current
Western boundary current
Please answer all the multiple choices !
Explanation / Answer
8. Answer false: Crust is the outermost thin layer of the earth and has a definite chemical composition. It is mainly made up of silicate composition and is separated from underlying ultramafic composition. The base of the crust is defined by Mohorovicic seismic discontinuity. There are two types of crust oceanic and continental. Oceanic crust is 6-7 km thick and continental crust is 35-40 km. Whereas the lithosphere is the rigid outer shell of the earth. It consists of crust and parts of upper mantle. It differs from the underlying lithosphere in terms of mechanical properties rather than chemical composition.
9. The plate boundary located in the San Francisco area is a transform plate boundary. This plate boundary is between North American and Pacific plates. The plates in the transform boundary neither diverges nor collides but horizontally slip past each other.
10. Mid oceanic ridge is an under water mountain systems formed due to movement of plates. They are formed along the divergent boundary where two plates goes moves apart and a massive amount of basalt is erupted which eventually forms oceanic crust.
11. Shallow focus earthquakes are those whose focus mainly lies near the surface of the earth. They are caused movement of continental plates and faults. Since they are near the surface of the earth, these earthquakes causes greater damage to the earth's surface. They occur frequently and are random in nature. The earthquakes occur at transform boundary are shallow focus earthquakes.
12. Mariana trench is located in the deep sea floor of western Pacific ocean. It is the deepest part of the earth. It forms a convergent zone where two tectonic plates collides.
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