Vocabulary
An area beneath a plate where magma shoots upward
What is a hotspot
This igneous rock is most often found at the bottom of the ocean.
What is Basalt?
Earthquakes and Volcanoes usually form at these plades
What are plate boundaries?
The Himalayan mountains are the result of a ___________________________ boundary.
What is convergent boundary
The 3 major types of plate boundaries are __________, _________________, and ________________.
What are convergent, divergent and transform?
These two continents look like they fit together like a puzzle.
What is Africa and South America
The mid-ocean ridge is an example of a feature which formed at this type of boundary
What is a divergent boundary
Hot air or liquid is less ________________ than cool air or liquid
What is dense
Name four of the major plates
What is any of the following North American plate, South American plate, Eurasian Plate, Indian-australia plate, African plate, Antarctica plate
These usually form at transform boundaries
What are earthquakes?
This is the name of the supercontinent that was once thought to contain all the continents.
What is Pangaea
This is the mechanism (what causes) the plates to move
What is convection cycles in the mantle
New crust is formed at these types of boundaries.
What are divergent boundaries?
The hottest layer of the earth.
What is the inner core
The Earth's crust is thinnest under the _____________________ and thickest under the _____________________.
What is thinnest under the ocean and thickest under the continents.
In reference to sea floor spreading, where is the youngest rock found?
What is at divergent plate boundaries?
This is the action of one plate being forced under another plate
What is subduction (where volcanoes often occur)
This feature was responsible for the formation of the Hawaiian Islands
What is a hotspot?