Plate Tectonics 1
Features found on the edge of continents or in the sea near chains of active volcanoes are known as this.
What are deep sea trenches?
This invention allowed scientists to see the geographical features of the ocean floor.
What is sonar?
Continental convergent boundaries have earthquakes but no volcanoes for this reason.
What is the crust is too thick for the magma to escape?
The movement of plates over Earth’s surface is known as this.
What is plate tectonics?
This is the area between two plates where new seafloor is created.
What is a rift valley?
The Hawaiian Island chain is an example of this.
What is a hot spot in the middle of an oceanic plate?
Boundaries where two plates slip past each other are known as this.
What are transform plate boundaries?
Strips of rock with normal and reversed polarity found symmetrically from mid ocean ridges are indicative of this.
What is seafloor spreading?
The melting of mantle material at the convergent boundary of an ocean and continental plate result in this.
What is a volcanic arc?
This when magma rises beneath a continent, causing it to become thinner, break, and split apart.
What is continental rifting?
Subduction zone have lots of these two phenomenon.
What are earthquakes and volcanic eruptions?
These are 4 lines of evidence Wegner identified for continental drift.
What are puzzle-piece continental drift, distribution of fossils, placement of similar rocks, and indicators of ancient climate?
The release of pressure which causes melting near the surface of a middle of a plate causes this.
What is a hot spot?
The melting of mantle material at the convergent boundary of two ocean plates results in this.
What is an island arc?
Magnetic evidence of similar age on two continents indicated that either there were two magnetic north poles or this.
What is continents had moved?
This is the mechanism for drifting continents.
What is seafloor spreading?
Convergent boundaries of two continental plates result in this landform.
What are mountains?
This is thought to be the engine for continental drift.
What thermal convection from mantle plumes?
Boundaries where plates move apart are known as this.
What are divergent plate boundaries?
Mid-ocean ridges are this type of plate boundary.
What are divergent plate boundaries?
The volcano below Yellowstone is an example of this.
What is a hot spot?
The transition from land to the deep sea are known as this.
What are continental margins?
Features that rise up high above the deep seafloor as a long chain of mountains are known as this.
What are mid-ocean ridges?
When a denser plate is dragged under a less dense plate into the mantle is known as this.
What is subduction?
Boundaries where plates move together are known as this.
What are convergent plate boundaries?