OCE Ch. 2
Examine the five words and/or phrases and determine the relationship among the majority of words/phrases. Please identify the word and/or phrase that does NOT fit the pattern. Enter only the letter of the answer (caps, no period, and not the full entry) in the field below. A. Aleutian Islands B. Canary Islands C. Galapagos Islands D. Hawaiian Islands E. Iceland
Aleutian Islands
Which of the following is the main reason that Earth has a magnetic field? Select only one answer.
Convection in the liquid iron-nickel outer core generates a magnetic field.
Mantle plumes are columnar areas of hot molten rock that arise from within the lithosphere.
False
New crust is formed at trenches and older crust is subducted at oceanic ridges.
False
The magnetic north pole has remained very close to the geographic North Pole throughout all of geologic time.
False
Water depth decreases as you move away from the mid-ocean ridge.
False
Examine the five words and/or phrases and determine the relationship among the majority of words/phrases. Please identify the word and/or phrase that does NOT fit the pattern. Enter only the letter of the answer (caps, no period, and not the full entry) in the field below. A. Aleutian Islands B. Andes Mountains C. Hawaiian Islands D. Japan E. Mariana Trench
Hawaiian Islands
What piece of evidence supports Wegener's hypothesis of continental drift?
Modern-day species that evolved in isolation share a common ancestor.
Fossils of ancient tropical plants are currently found near the poles because the:
PLANTS lived in the TROPICS, but landmasses have drifted to current locations.
Examine the five words and/or phrases and determine the relationship among the majority of words/phrases. Please identify the word and/or phrase that does NOT fit the pattern. Enter only the letter of the answer (caps, no period, and not the full entry) in the field below. A. Gondwanaland B. Panamerica C. Pangaea D. Panthalassa E. Tethys Sea
Panamerica
Match the term with the appropriate phrase. ancient precursor of the Pacific Ocean
Panthalassa
Examine the five words and/or phrases and determine the relationship among the majority of words/phrases. Please identify the word and/or phrase that does NOT fit the pattern. Enter only the letter of the answer (caps, no period, and not the full entry) in the field below. A. Alfred Wegener B. Harry Hess C. Drummond Matthews D. Frederick Vine E. Stanley Miller
Stanley Miller
Which of the following statements is true of the lithosphere?
The lithosphere is composed of the CRUST and the uppermost portion of the mantle.
What do all plate boundaries have in common? Select only one answer.
They are all associated with zones of EARTHQUAKES.
Of the following statements about sea floor magnetic anomalies, which is/are true?
They are oriented PARALLEL to the MID-ocean ridge.
Charles Darwin was the first person to propose a hypothesis on the origin of coral reefs.
True
Fast-moving spreading zones tend to be more gently sloping than slow-moving ridges.
True
Iceland is geologically active because it is located along the Mid-Atlantic Ridge.
True
Evidence shows that periodic reversals of Earth's magnetic field have resulted in __________.
a symmetrical pattern of normal and reverse magnetization in ocean crustal rocks
Which of the following is characteristic of oceanic-continental convergent plate boundaries?
andesitic volcanoes
All continents fit together with the least number of overlaps and gaps when the continents are matched along:
contours at around 2,000 meters depth
Examine the five words and/or phrases and determine the relationship among the majority of words/phrases. Please identify the word and/or phrase that does NOT fit the pattern. Enter only the letter of the answer (caps, no period, and not the full entry) in the field below. A. divergent plate boundary B. oceanic-continental convergence C. oceanic-oceanic convergence D. transform plate boundary E. hot spot
hot spot
Coral reefs:
include atolls, barrier, and fringing reefs.
Earthquakes can occur only in the __________.
lithosphere
Tectonic plates are pieces of the ________ that float on the more fluid ________ below.
lithosphere; asthenosphere
Examine the five words and/or phrases and determine the relationship among the majority of words/phrases. Please identify the word and/or phrase that does NOT fit the pattern. Enter only the letter of the answer (caps, no period, and not the full entry) in the field below. A. rift valley B. oceanic trench C. rifting D. seafloor spreading E. divergent plate boundary
oceanic trench
What type of plate boundary will result in the formation of a volcanic island chain or arc near a deep-sea trench?
oceanic-OCEANIC CONVERGENT boundaries
A researcher interested in the vertical zonation of oceanic lithosphere would want to study __________.
ophiolites
The study of historical changes of continental shapes and positions is called:
paleogeography.
Match the term with the appropriate phrase. study of magnetism over geologic time
paleomagnetism
Wegener used all the following to provide evidence for continental drift except :
seafloor magnetic pattern.
Match the term with the appropriate phrase. seafloor magnetic stripes
spreading center
Match the term with the appropriate phrase. island arc
subduction zone
Match the term with the appropriate phrase. sloping area from a trench along a downward moving plate
subduction zone
Match the term with the appropriate phrase. trench
subduction zone
Deep ocean trenches are associated with:
subduction zones
Based on paleogeographic records, _____________.
the NORTH ATLANTIC opened before INDIA separated from Antarctica
Frederick Vine and Drummond Matthews determined that new ocean floor was being produced at ocean ridges by examining:
the magnetic pattern of rocks on the seafloor.
The flat top of a guyot or tablemount in deep water is evidence that __________.
the seamount was once at the surface of the ocean, but is now submerged due to plate movement and erosion when it was near sea level.
