What is one reason we have stripes of alternating magnetism on the ocean floor?(1 point)
Responses
Magnetic direction of rock changes as Earth’s magnetic poles drift and reverse.
Plates move as new rock forms, which causes magnetic direction to skew away from normal.
Rock is constantly being destroyed at the mid-ocean ridge on the ocean floor
Minerals in magma match the magnetic direction present on Earth when it hardens into rock
Magnetic direction of rock changes as Earth’s magnetic poles drift and reverse.
What is one thing scientists can learn from studying the Paleomagnetism on the ocean floor?(1 point)
Responses
the cause of the magnetic pole reversals
the exact location of the next earthquake
the speed of the plates moving away from each other
when the next magnetic reversal will take place
the cause of the magnetic pole reversals
The Continental Crust, Oceanic Crust and very top of Earth's mantle make up a hard surface that breaks into tectonic plates. This layer of the Earth is referred to as the ____________(A)_ and it floats or moves on a melted layer of Earth called the ________________(B)__.
Crust, Mantle
Plates, Lithosphere
Lithosphere, Asthenosphere
Lithosphere, Hot Spot
Lithosphere, Asthenosphere
Where might we find the oldest rock on Earth?(1 point)
Responses
the center of continents
the center of the ocean floor
the highest mountain on Earth
pushed under a tectonic plate
pushed under a tectonic plate
WHERE are MOST Volcanoes located on the Earth?(1 point)
Responses
In the middle of plates
In the ocean
At the plate boundaries
On land
At the plate boundaries
Geologist discovered fossils of identical spider mites from the same time period but on opposite sides of the ocean from each other. What conclusion is supported by the discovery of these fossils?(1 point)
Responses
The climate was much cooler during the time that the mites lived.
The locations of the fossils were once much closer to each other.
The mites were extraordinary swimmers.
The locations of the fossils were once vast swamp lands.