Podcast
Questions and Answers
What did Alfred Wegener name the connected supercontinent in his theory of continental drift?
What did Alfred Wegener name the connected supercontinent in his theory of continental drift?
- Laurasia
- Gondwana
- Rodinia
- Pangea (correct)
What evidence of plate tectonics was not confirmed and widely accepted until decades after Alfred Wegener's death?
What evidence of plate tectonics was not confirmed and widely accepted until decades after Alfred Wegener's death?
- Paleomagnetism (correct)
- Hot spots
- Seafloor spreading
- Magnetic reversals
What creates new crust at mid-ocean ridges?
What creates new crust at mid-ocean ridges?
- Colliding tectonic plates
- Subduction of oceanic crust
- Molten basalt rising at the ridge (correct)
- Volcanic eruptions
What are hot spots on the Earth's surface associated with?
What are hot spots on the Earth's surface associated with?
What causes the creation of a chain of volcanoes on the Earth's surface as the plate moves away from a hot spot?
What causes the creation of a chain of volcanoes on the Earth's surface as the plate moves away from a hot spot?
What do symmetric bands on each side of a mid-ocean ridge indicate?
What do symmetric bands on each side of a mid-ocean ridge indicate?
What data do scientists use to develop the idea of seafloor spreading?
What data do scientists use to develop the idea of seafloor spreading?
What did scientists initially believe when studying remnant magnetism in rocks from the same area with different ages?
What did scientists initially believe when studying remnant magnetism in rocks from the same area with different ages?
What is paleomagnetism?
What is paleomagnetism?
What causes some rocks to be more susceptible to paleomagnetic signals?
What causes some rocks to be more susceptible to paleomagnetic signals?
What does remnant magnetism refer to?
What does remnant magnetism refer to?
How has paleomagnetic data been used to understand Earth's history?
How has paleomagnetic data been used to understand Earth's history?
What is plate tectonics theory?
What is plate tectonics theory?
How are the magnetic north and south poles related to geographic North and South poles?
How are the magnetic north and south poles related to geographic North and South poles?
