Earth's Structure
This percentage of the Earth's surface is covered by water.
What is 75%?
This is the name of the supercontinent that once existed.
What is Pangea?
This boundary forms when two plates are coming together.
What is convergent?
This is what makes magma different from lava.
What is it's location beneath the Earth's surface?
This stressful force causes plates to lock up as they push together.
What is friction?
This is the Earth's thinnest layer.
What is the crust?
This is one of the reasons Wegener's hypothesis of Continental Drift was initially rejected.
What is he could not explain what was causing the continents to move?
Earthquakes are common at this type of boundary.
This process occurs at oceanic plate boundaries, and may cause volcano formation.
What is subduction?
The epicenter of an earthquake is located on the surface of the Earth, directly above this origin point of the Earthquake.
What is the focus?
This layer makes up the majority of Earth's volume.
What is the mantle?
This process occurs at mid-ocean ridges where new oceanic crust is created.
What is sea-floor spreading?
Crust is destroyed at this type of boundary.
What is convergent?
Hawaii formed from this type of volcanic activity, far from plate boundaries.
What is a hotspot?
This is the first of the seismic waves to be felt during an earthquake.
What are Primary Waves?
The inner and outer core are both made of this substance.
What is metal? What is iron and nickel?
This is the name for the region of Earth consisting of all of the crust and the upper rigid portion of the mantle.
What is the lithosphere?
Crust is created at the Mid-Atlantic Ridge, which is this type of boundary.
What is divergent?
This area of intense subduction zones and transform faults accounts for roughly 75% of Earth's active volcanoes and around 90% of Earth's earthquakes.
What is the Pacific Ring of Fire?
While primary waves can travel through solids and liquids, this slower wave can only travel through solids.
What are Secondary Waves?
The rotation of the liquid outer core around the solid inner core causes this to be formed.
What is a magnetic field?
The movement of tectonic plates is caused by this.
What is convection in the mantle?
When two continental plates collide, this landform may be created.
What are mountains?
A volcano may be called this if it is not currently active or erupting but may do so in the future.
What is dormant?
Although this is the slowest of the seismic waves, it is also the most destructive.
What are Surface Waves?