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OCN - Test Study Questions with Correct Answers
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OCN - Test Study Questions with Correct Answers
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OCN - Test Study Questions with CorrectAnswers
Which of the following lines of evidence did Alfred Wegener use to support the concept of
drifting continents? - ✔✔evidence of glaciers in areas that are now tropical
the way the shapes of the continents fit together like pieces of a jigsaw puzzle
the pattern of similar mountain belts on different continents
the distribution of species of fossils
Which of the following is the main reason that Earth has a magnetic field? - ✔✔Convection
in the liquid iron-nickel outer core generates a magnetic field.
Why does the sea floor have a striped pattern of magnetic anomalies that is symmetric with
respect to the mid-ocean ridge? - ✔✔The polarity of Earth's magnetic field experiences
reversals.
The igneous rock of the ocean floor preserves Earth's existing magnetic field as the rock cools.
The ocean floor is spreading apart and new sea floor is forming.
Of the following statements about Earth's magnetic field, which is/are true? - ✔✔The lines of
the magnetic force are perpendicular relative to Earth's surface at the magnetic north pole.
The magnetic north pole may reverse so that it is located near the geographic south pole.
,The lines of the magnetic force are perpendicular relative to Earth's surface at the magnetic
south pole.
The lines of the magnetic force are parallel with Earth's surface at the equator.
Of the following statements about sea floor magnetic anomalies, which is true? - ✔✔They
are oriented parallel to the mid-ocean ridge.
Of the following statements about ocean crust, which is/are true? - ✔✔Ocean crust is
created at the mid-ocean ridge.
Ocean crust is destroyed at deep sea trenches.
Which of the following statements accurately describes a segment of the mid-ocean ridge
spreading at a rate of 3 centimeters per year? Choose all that apply. - ✔✔It would have a
prominent and deep rift valley.
It would be classified as an oceanic ridge.
What do all plate boundaries have in common? - ✔✔They are all associated with zones of
earthquakes.
Of the following statements about the age of the ocean crust, which one is true? - ✔✔The
oldest ocean crust is about 200 million years old and is located near an ocean trench.
By what year did had these first navigators reached all habitable islands in the Pacific? -
✔✔1000 AD
What group of islands are the most isolated on earth? - ✔✔Hawaii
, How were the Asians able to reach Polynesia despite the dominant trade winds coming from
the east? - ✔✔The winds slacken or come from the west during certain times of year
What was Mau Pialug's role on the Hokule'a? - ✔✔The guide
Where was the Hawai'iloa built? - ✔✔Honolulu
Who is responsible in the Cooke Islands for building traditional canoes? - ✔✔Sir Tom Davis
The idea of having escort vessels was highly debated among the group. Did they end up having
the escort boats? - ✔✔Yes
Besides the star compass, what were 2 other things navigators could observe to help find their
way? - ✔✔Signs of the animals, cloud coloration
How long was the voyage to Hawaii supposed to take? - ✔✔3 weeks
What is the only fresh food available during the journey? - ✔✔Fish
Most large ocean floor features owe their origins to _________. - ✔✔plate tectonic
processes
Human beings (also known as "homo sapiens") currently live in the _________ epoch of the
__________ period in the ___________ era of the __________ eon. -
✔✔holocene,quaternary,cenozoic,phanerozoic
- ✔✔The lithosphere contains a higher proportion of aluminum silicates than other layers
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