Vocabulary
Structure of the Earth
Landforms
Plate Tectonics
Miscellaneous
100
The thinnest layer of the Earth
What is the crust
100
There are ______________ main layers of the Earth.
What is four
100

Formed when two continental plates collide

What is mountain?
100
Earthquakes and Volcanoes are usually located in relation to these
What is a plate boundary
100
The Himalayan mountains are the result of a ___________________________ boundary.
What is convergent boundary
200
A number of rigid, but moving, pieces of Earth's surface
What is tectonic plates.
200
The thickest layer of the Earth
What is the mantle.
200

a gently curved fracture in the rocks of Earth's crust, causing the displacement of the rocks on the opposite sides of the fracture.

What is fault (line)?

200
The mid-ocean ridge is an example of a ____________________ boundary and ___________________ occurs here where new ocean floor is formed.
What is divergent boundary; sea-floor spreading
200
Hot air or liquid is less ________________ than cool air or liquide
What is dense
300
The theory that all continents are fragments of Pangaea now drifting apart
What is the Continental Drift Theory
300
Plates float on top of the _______________________.
What is the asthenosphere
300

Found on land and at the bottom of the ocean, where they are created by the process of seafloor spreading.

What is rift valley?

300

State (or sing) the plate boundaries song.

What is convergent is colliding, divergent is dividing, transforming it is sliding, the three plate boundaries.

300
_________________ are a result from the build up of stress at a plate boundary.
What is earthquakes
400

States that youngest rocks of ocean floor are at diverging boundaries, moving outward

What is seafloor spreading

400
The rigid part of the Earth including the crust and the upper mantle (makes up the plates of the Earth)
What is the lithosphere
400

formed by subduction of Earth's tectonic plates where a denser plate is pushed beneath a lighter plate

What is deep sea trench?

400
This is the mechanism (what causes) the plates to move
What is convection cycles in the mantle
400
The San Andreas Fault in California is an example of a ____________________ boundary.
What is a transform boundary
500
Although the hottest layer of the Earth, this layer is solid metal
What is the inner core
500
The Earth's crust is thinnest under the _____________________ and thickest under the _____________________.
What is thinnest under the ocean and thickest under the continents.
500

Formed by partial melting of a plate at a subduction zone

What is volcanic island arc?

500
The two types of convergent boundaries
What is subduction (where volcanoes often occur) and collision (where mountains are usually formed)
500

Used to map the bottom of the ocean and discovered the mid-ocean ridge in the Atlantic Ocean.

What is sonar?

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