01
True or false
1 point
True or false: The continental shelf is the shallow, gently sloping, submerged edge of a continent.
Free Practice Quiz Question List
2 Ocean Basins and Seafloor Geology Online Quiz Questions
Use this free practice quiz with 20 questions to review 2 Ocean Basins and Seafloor Geology, test your knowledge, and prepare for your next test or exam.
20 questions
02
Written response
1 point
What type of sediment forms from weathered rock carried from land by rivers, wind, or glaciers?
03
Choose one
1 point
At which seafloor feature does rising, melting mantle material form new oceanic crust as plates pull apart?
- A
A deep-ocean trench, where oceanic lithosphere is consumed
- B
A mid-ocean ridge, where new oceanic crust forms
- C
A continental rise, where sediment accumulates
- D
A transform fault, where plates slide horizontally past one another
04
Fill in the blank
1 point
At the base of many continental slopes, a gentler, sediment-covered area is the .
05
True or false
1 point
True or false: Oceanic crust generally becomes older with increasing distance from a mid-ocean ridge.
- A
True
- B
False
06
Choose one
1 point
A continental coast lies away from an active plate boundary and has accumulated thick sediment. Which type of margin best describes it?
- A
A margin bordering a plate boundary, with a trench and volcanism
- B
A margin where oceanic crust is created at a ridge
- C
A margin away from an active plate boundary that can accumulate thick sediment
- D
A margin defined by a transform fault offsetting ridge segments
07
Written response
1 point
What process occurs when denser oceanic lithosphere sinks beneath another plate at a convergent boundary?
08
Choose all
1 point
Which two observations support the interpretation that oceanic crust spreads outward from mid-ocean ridges? Select all correct answers.
- A
Matching bands of alternating magnetic patterns on either side of a ridge
- B
A uniform crust age at all distances from the ridge
- C
Crust that is youngest at the ridge and older farther away
- D
Sediment that occurs only at ocean trenches
09
Fill in the blank
1 point
Transform faults offset ridge segments and accommodate between plates.
10
Choose one
1 point
Dissolved substances in seawater precipitate into solid particles on the seafloor. What type of sediment is this?
- A
Biogenous sediment
- B
Hydrogenous sediment
- C
Lithogenous sediment
- D
Cosmogenous sediment
11
Choose all
1 point
Which features or events may be associated with an oceanic plate subducting beneath another plate? Select all correct answers.
- A
A deep-ocean trench
- B
Earthquakes
- C
Matching magnetic bands on either side of a mid-ocean ridge
- D
A volcanic arc
12
Open ended
1 point
Explain how processes at divergent and convergent plate boundaries can change the size of an ocean basin over time.
13
True or false
1 point
True or false: An abyssal plain can be relatively flat because sediment has buried much of the relief beneath it.
- A
True
- B
False
14
Choose one
1 point
Which process produces mineral-rich fluid at hydrothermal vents near spreading centers?
- A
Compaction of sediment beneath an abyssal plain
- B
Subduction of oceanic lithosphere to form a trench
- C
Circulation and heating of seawater through cracks in hot crust
- D
Cooling of rising mantle material to create new crust
15
Choose one
1 point
Which seafloor feature is an underwater volcanic mountain?
- A
A broad, relatively flat deep-seafloor region
- B
An underwater volcanic mountain
- C
A steep descent from a continental shelf
- D
A long, narrow depression commonly associated with subduction
16
Choose one
1 point
A sediment sample formed from dissolved substances in seawater that precipitated into solids. Which sediment category best describes it?
- A
Lithogenous
- B
Cosmogenous
- C
Hydrogenous
- D
Biogenous
17
Choose one
1 point
A continental coast lies away from an active plate boundary and has accumulated thick sediment. Which type of margin best fits this setting?
- A
A passive margin
- B
An active margin
- C
A mid-ocean ridge
- D
A transform fault
18
Written response
1 point
What is the singular term for an underwater volcanic mountain?
19
Choose one
1 point
A deposit near a continent consists mainly of weathered rock carried to the ocean by rivers. Which sediment category best describes it?
- A
Biogenous sediment
- B
Cosmogenous sediment
- C
Hydrogenous sediment
- D
Lithogenous sediment
20
Written response
1 point
What is the singular term for a feature where heated, mineral-rich seawater emerges from cracks in oceanic crust?