Magnetism and Plate Tectonics Quick Check
1 of 31 of 3 Items
Question
What can scientists learn from magnetic striping patterns? Select the three correct answers. (2 points)
Responses
the speed of one plate as it subducts below another plate
the location of ancient faults caused by seismic activity.
the direction plates are moving relative to each other
the cause of magnetic pole reversals
the year the next magnetic reversal will take place
the exact location of the next earthquake along the California coast
The three correct answers are:
1. The direction plates are moving relative to each other
2. The cause of magnetic pole reversals
3. The location of ancient faults caused by seismic activity.
Magnetism and Plate Tectonics Quick Check
2 of 32 of 3 Items
Question
Identify the factors that cause magnetic stripes to form along the ocean floor. Select the two correct answers.(1 point)
Responses
Plates move as new rock forms, which causes magnetic direction to skew away from normal.
Rock forming at the oceanic ridge pushes older rock outward in both directions.
Magma acquires the magnetic direction present on Earth when it hardens into rock
Magnetic direction of rock changes as Earth’s magnetic poles drift.
The two correct answers are:
1. Plates move as new rock forms, which causes magnetic direction to skew away from normal.
2. Magma acquires the magnetic direction present on Earth when it hardens into rock.
Magnetism and Plate Tectonics Quick Check
3 of 33 of 3 Items
Question
Rocks become magnetic when(1 point)
Responses
Earth's magnetic field reverses direction.
rocks are heated to extreme temperatures.
continents move.
iron particles within the rock align with Earth's magnetic field.
The correct answer is "iron particles within the rock align with Earth's magnetic field."
The three correct answers are:
1. The direction plates are moving relative to each other.
2. The cause of magnetic pole reversals.
3. The speed of one plate as it subducts below another plate.
To determine the correct answers about what scientists can learn from magnetic striping patterns, we can go through each response and analyze it in relation to plate tectonics and magnetism.
1. The speed of one plate as it subducts below another plate: This is one of the correct answers. By analyzing the magnetic striping patterns on the seafloor, scientists can measure the rate at which plates are moving relative to each other. This information helps them understand the dynamics of plate tectonics.
2. The location of ancient faults caused by seismic activity: This is another correct answer. Magnetic striping patterns can provide insights into the history and location of ancient faults resulting from seismic activity. These patterns can be used to reconstruct the movement of tectonic plates over time.
3. The direction plates are moving relative to each other: This is also a correct answer. Magnetic striping patterns allow scientists to determine the orientations of magnetic minerals in rocks, which can indicate the direction the plates are moving relative to each other.
4. The cause of magnetic pole reversals: Magnetic striping patterns do provide important evidence for magnetic pole reversals. However, these patterns do not directly explain the cause of pole reversals. Scientists study other sources of evidence, such as the Earth's magnetic field records and paleomagnetic data, to understand the mechanisms behind magnetic pole reversals.
5. The year the next magnetic reversal will take place: Magnetic striping patterns cannot predict the exact year of the next magnetic reversal. The timing and occurrence of magnetic reversals are not directly linked to the patterns observed on the seafloor.
6. The exact location of the next earthquake along the California coast: Magnetic striping patterns do not provide information about the exact location of future earthquakes. Earthquake predictions are based on other geological and seismological data, such as fault mapping, seismic measurements, and historical earthquake records.
Based on the analysis, the three correct answers are:
- The speed of one plate as it subducts below another plate.
- The location of ancient faults caused by seismic activity.
- The direction plates are moving relative to each other.