Choose the correct option: Alfred Wegener - sea floor spreading, Albert Einstein continental drift

• Harry Hess continental drift, Isaac Newton seafloor spreading

• Harry Hess seafloor spreading, Alfred Wegener continental drift

• Alfred Wegener seafloor spreading, Harry Hess continental drift

Volcanic mountains which were once volcanoes but no longer erupt that remain below sea level are known:

• Island Arcs

• Guyots

• Volcano

• Seamounts

Volcanic island arcs occur along:

• Transform boundaries

• Mid-oceanic ridges

• Continent-continent collision

• Oceanic subduction zones

Sediments become older and thicker towards mid-oceanic ridges:

• Sediments become older and thicker away from mid-oceanic ridges

• Sediments become younger and thicker towards mid-oceanic ridges

• Sediments become older and thinner towards mid-oceanic ridges

Paleomagnetism refers to:

• The polarity reversal of earth's magnetic field

• The occurrence of magnetic anomaly stripes along mid-oceanic ridges

• The angle between magnetic north and geographic north

• The preservation of the record of Earth's past magnetic field by rocks.

The magnetic inclination is 0° at:

• North pole

• South pole

• Both poles

• Magnetic equator

Magnetic anomaly refers to:

• The periodic change in the polarity of Earth's magnetic field

• The change in the direction of rotation of the Earth

• The change in the direction of rotation of molten iron in outer core

• The difference between the expected strength and the observed strength of the Earth's magnetic field at a location

The reversal of the imaginary magnetic dipole occurs at:

• Lower mantle

• Inner core

• Outer core

• Upper mantle

The width of magnetic stripes in oceanic basalt is proportional to:

• Thickness of oceanic crust

• Thickness of oceanic lithosphere

• Width of mid oceanic ridge

• Duration of normal or reversed magnetic field conditions

Lithosphere is denser than asthenosphere:

• Lithosphere is warmer than asthenosphere

• Oceanic lithosphere is thicker than continental lithosphere

• Asthenosphere is denser than lithosphere