Asked by alt

Along which features does seafloor spreading occur?(1 point)
Responses

ocean basins
ocean basins

ocean trenches
ocean trenches

fault lines
fault lines

mid-ocean ridges
Answered by alt
Why is no land created or destroyed at transform boundaries?(1 point)
Responses

because magma rushes into gaps at these boundaries
because magma rushes into gaps at these boundaries

because the plates only slip past each other at these boundaries
because the plates only slip past each other at these boundaries

because the plates are more dense at these boundaries
because the plates are more dense at these boundaries

because the plates crumble into each other at these boundaries
Answered by alt
Iron particles in basalt on the ocean floor tell scientists [the direction of the magnetic field / the direction the plate is moving]. In two adjacent magnetic stripes, the iron particles show [different / the same] alignments.
Answered by alt
Which statement identifies a major reason for the subduction that helps to form volcanoes?(1 point)
Responses

the upwelling of magma between diverging plates
the upwelling of magma between diverging plates

the release of hot ash and steam in a pyroclastic flow
the release of hot ash and steam in a pyroclastic flow

the difference in density of oceanic and continental plates
the difference in density of oceanic and continental plates

the unusually high temperature at hotspots
Answered by alt
In trying to prove continental drift, Alfred Wegener used evidence from long ago to show that in the distant past, similar animal species lived in places that are [seperated by great distances / no longer in existence / now underwater / on different tectonic plates] today. For example, fossils of the [Mesosaurus / Lystrosaurus / Tyrannosaurus / Glossoptera] were found in India, Africa, and Antartica.
Answered by alt
Which features do most stratovolcanoes and cinder cone volcanoes have in common?(1 point)
Responses

steep sides and violent eruptions
steep sides and violent eruptions

broad base with quiet eruptions
broad base with quiet eruptions

wide dome shape and thick lava
wide dome shape and thick lava

violent eruptions and thin, flowing lava
Answered by alt
Ocean trenches form over millions or billions of years. Which statement accurately describes how ocean trenches form?(1 point)
Responses

a plate of continental crust collides with another plate of continental crust
a plate of continental crust collides with another plate of continental crust

two plates of oceanic crust pull away from each other
two plates of oceanic crust pull away from each other

two plates of continental crust slide past each other
two plates of continental crust slide past each other

a plate of oceanic crust is subducted under a plate of continental crust
Answered by alt
Geologists observed signs of widespread ancient glaciers from the same time period in areas across South America, Africa, Antarctica, India, and Australia. What theory did this observation support?(1 point)
Responses

Earth was much farther than the sun than it is today.
Earth was much farther than the sun than it is today.

Glaciers were once more common than they are today.
Glaciers were once more common than they are today.

Those continents were once together as one supercontinent.
Those continents were once together as one supercontinent.

Most of Earth was once covered in a vast ice sheet.
Answered by GPT 3.5
mid-ocean ridges
Answered by GPT 3.5
because the plates only slip past each other at these boundaries
Answered by GPT 3.5
Iron particles in basalt on the ocean floor tell scientists the direction of the magnetic field. In two adjacent magnetic stripes, the iron particles show different alignments.
Answered by GPT 3.5
the difference in density of oceanic and continental plates
Answered by GPT 3.5
In trying to prove continental drift, Alfred Wegener used evidence from long ago to show that in the distant past, similar animal species lived in places that are separated by great distances today. For example, fossils of the Mesosaurus were found in India, Africa, and Antarctica.
Answered by GPT 3.5
steep sides and violent eruptions
Answered by GPT 3.5
a plate of oceanic crust is subducted under a plate of continental crust
Answered by GPT 3.5
Those continents were once together as one supercontinent.