Plate Boundaries
Seafloor Spreading
Continental Drift
Earth's Features
Random
100
What is a divergent plate boundary?
When two tectonic plates separate.
100
Why do new oceanic crust form in varying directions every millions of years?
Magnetism.
100
Who proposed the theory of continental drift and aided in the discovery of tectonic plates?
Alfred Wegner
100
What is found in Earth's mantle?
Magma and convection currents.
100
What wind speed classifies a hurricane?
74 mph winds
200
What is a transform boundary?
When two plates slide past each other, creating friction.
200
Where does seafloor spreading take place?
Mid-ocean ridges.
200
Name one piece of evidence to support continental drift.
1. The fit of the continents like puzzle pieces
2. Fossils were found showing identical species of plants and animals on separate continents.
3. Rocks found on various continents indicate different climates, such as glacial traces in warm regions.
200
What layer of earth has liquid iron?
The outer core.
200
What is the “Ring of Fire?”
A location where most Earthquakes and volcanoes occur.
300
What convergent plate boundary occurs at continental and oceanic plate boundaries?
Subduction. The oceanic plate boundary gets subducted.
300
What does seafloor spreading cause?
new oceanic crust.
300
What is the name of the "supercontinent?"
Pangaea
300
What layer of the earth do tectonic plates form?
Lithosphere
300
The San Andreas Fault, a plate boundary between the Pacific and North American plates, is an example of what plate boundary?
transform boundary
400
What convergent plate boundary occurs when continental and continental plate boundaries collide?
Collision zone. Mountains and volcanoes form at this boundary.
400
What plate boundary causes seafloor spreading?
Divergent.
400
How are the theories of continental drift and tectonic plates connected?
Tectonic plates explain how continents can separate from one another.
Continental drift describes the movement of continents across the Earth's surface, while plate tectonics explains the mechanism behind this movement by identifying large sections of the Earth's crust (tectonic plates) that move and carry the continents with them.
400
How do convection currents rotate?
Hot, less dense fluid rises, cools as it moves upwards, and then sinks back down, creating a continuous cycle where warm material replaces the cool material that has sunk, thus forming a loop or current.
400
The Appalachian Mountains, a plate boundary between the North American Plate and the African Plate, is an example of what plate boundary?
Convergent
500
What convergent plate boundary occurs when oceanic and oceanic plate boundaries collide?
Island Ark.
500
What kind of rocks form as a result of seafloor spreading?
igneous
500
Name three pieces of evidence that support the theory of continental drift.
1. The fit of the continents like puzzle pieces
2. Fossils were found showing identical species of plants and animals on separate continents.
3. Rocks found on various continents indicate different climates, such as glacial traces in warm regions.
500
What happens when stress causes plates to slide past each other, releasing stored energy in the form of seismic waves?
Earthquakes
500
The Mid-Atlantic Ridge between the North American Plate from the Eurasian Plate in the North Atlantic is an example of what plate boundary?
divergent.