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WorksheetsPlate Tectonics
Total questions: 20
Worksheet time: 18mins
When a continent moves, we call it ____.
Tectonics
Drift
Transfer
The most recent supercontinent was called ____.
Gigantia
Pangaea
Humongia
It is taken the continents ____ years to drift from Pangaea to their current location.
300
300 Thousand
300 Million
300 Billion
Which two observations provide evidence for Pangaea? (Pick 2)
The continents look like they fit together like puzzle pieces.
Ancient textbooks describe a single continent.
The same fossils have been found in Africa and South America.
The drifting continents left behind tracks that we can follow.
How have scientists learned about the mantle?
By drilling down to observe it directly
By making inferences
By observing pieces of the mantle that rose to Earth's surface
How have scientists learned about the core?
By drilling down to observe it directly
By making inferences
By observing pieces of the core that rose to Earth's surface
Although we say, "The continents drifted" in reality ___.
The plates moved
The continents moved
Nothing moved
The movement of the plates is caused by ___.
Magnets
Asteroids
Changes in the mantle
Why do the plates move?
Tides
Waves
Currents
When hot rock rises from the mantle, ___.
The plates are pushed apart
The plates are pulled together
The best evidence supporting Plate Tectonics is ___.
Floods
Sea-floor Spreading
Tides
When scientists study the Mid-Atlantic ridge, they found the youngest rocks ___.
Close to the center
Far out at the edges
Evenly distributed across the ocean floor
The new rocks in the ridge are formed by ___.
Dead organism fossils
Broken pieces of old continents
Liquid rock rising from the mantle
Two continents that have been pushed apart by the sea-floor spreading at the
Mid-Atlantic Ridge are ___.
Africa and Australia
Africa and South America
Europe and Asia
Asia and North America
Who proposed the theory of continental drift?
Harry Hess
Alfred Wegener
Isaac Newton
Charles Darwin
Organize the Layers from the Surface to the Deepest.
Crust
Mantle
Outer Core
Inner Core
Match the layer to its composition.
Crust
Solid Rock
Mantle
Liquid Rock
Outer Core
Liquid Metal
Inner Core
Solid Metal
Sequence the events in the convection current.
Hot rock rises through the mantle.
The hot rock reaches the crust and pushes the plates apart.
The cooling rock in the mantle sinks back towards the core.
The core heats the rock and the cycle starts again.
When Alfred Wegener first proposed Continental Drift Theory, people (a) , but now scientists have (b) .
