Question
Which statement identifies a major reason for the subduction that helps to form volcanoes?(1 point)
Responses
the release of hot ash and steam in a pyroclastic flow
the release of hot ash and steam in a pyroclastic flow
the upwelling of magma between diverging plates
the upwelling of magma between diverging plates
the difference in density of oceanic and continental plates
the difference in density of oceanic and continental plates
the unusually high temperature at hotspots
Responses
the release of hot ash and steam in a pyroclastic flow
the release of hot ash and steam in a pyroclastic flow
the upwelling of magma between diverging plates
the upwelling of magma between diverging plates
the difference in density of oceanic and continental plates
the difference in density of oceanic and continental plates
the unusually high temperature at hotspots
Answers
Answer
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.
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.
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