Mitchbatrina21idn
Answered

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Which statement is TRUE regarding seafloor spreading at mid – ocean ridge? *
A. Continents flow through oceanic crust
B. Older oceanic crust is slowly pushed away from ridge
C. Earth’s magnetic field reverses about every half a million years
D. Rocks on one side of the ridge have the opposite magnetic polarity to the other side.
2. If subduction destroys old crust, what does seafloor spreading create? *
A. new crust
B. new mantle
C. new sea
D. new core
3. Seafloor spreading occurs along large mountains ranges that ascend from the ocean floor. This actual site of seafloor spreading is called *
A. volcano
B. mid ocean ridge
C. island arc
D. mountain ranges
4. Which evidence/s supports seafloor spreading? *
Captionless Image
Option 1I. Mantle materials circulate slowly forming convection cells or
convection currents.
II. Magnet records in the seafloor parallel to the oceanic ridges.
III. Presence of belt of underwater mountains.
A. I only
B. I and II only
C. I and III only
D. All of the given
5. The alternating stripes on the ocean floor show *
A. how earth first formed
B. why the seafloor spreads
C. when polar reversals occurred
D. where sediments were deposited​

Sagot :

Cuteboy119idn

Answer:

  1. A
  2. C
  3. A
  4. B
  5. B
  6. D

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