Show:
Vocabulary
Structure of the Earth
Continental Drift Theory
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
Created the Continental Drift Theory
Who is Alfred Wegener?
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 mantle?
200
Evidence of matching animal fossils from two separate continents _____________________ and _____________________
What is Africa and South America?
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 liquid
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 mantle?
300
Rows of alternation magnetic patterns exist in Earth's crust.
What is evidence that Continental Drift exist?
300
Name four of the major plates?
What is any of the following North American plate, South American plate, Eurasian Plate, Indoaustralia plate, African plate, Antarctica plate?
300
_________________ are a result from the build up of stress at a plate boundary.
What are earthquakes?
400
States that youngest rocks of ocean floor are at divergent 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
Pangaea existed this many millions of years ago
What is 300?
400
This is the mechanism (what causes) the plates to move
What is convection current?
400
The San Andreas Fault in California is an example of a ____________________ boundary.
What transform?
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 in the _____________________.
What is thinnest under the ocean and thickest in the continents?
500
Continental Drift Theory was not accepted because it did not explain this
What is force?
500
Two types of convergent boundaries
What is subduction (where volcanoes often occur) and collision (where mountains are usually formed)?
500
This person used sonar to map the bottom of the ocean and discovered the mid-ocean ridge in the Atlantic Ocean.
Who is Harry Hess?