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WorksheetsPangea/Continental Drift/Seafloor Spreading
Total questions: 16
Worksheet time: 14mins
In sea-floor spreading, molten material rises from the mantle and erupts creating new crust.
along the edges of all the continents.
along mid-ocean ridges.
in deep-ocean trenches.
at the north and south poles.
Most geologists think that the movement of Earth’s plates is caused by _______
convection.
continental drift.
subduction.
conduction.
India
Australia
Antarctica
All of them
South America
What are mid-ocean ridges?
Vast mountain ranges deep below the ocean's surface
Deep underwater troughs on the seafloor
The process by which new oceanic crust is continuously formed and destroyed
molten rock below Earth's surface
The youngest rocks on the ocean floor are located ____.
near continents
at mid-ocean ridges
far from mid-ocean ridges
near Asia
Who first proposed the idea of seafloor spreading?
Alfred Wegener
Harry Hess
James Hutton
Nicolaus Copernicus
Harry Hess discovered....
Submarines
Deserts at the bottom of the ocean
A new fish species
The Mid-Atlantic Ridge
Which layer of Earth flows slowly and causes the crust to move?
Crust
Mantle
Inner Core
Outer core
Define: Pangea
Earth's continental blocks of land to form a single large landmass known as a supercontinent.
The smaller continents at the North and South Pole today.
Australia
