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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 3 (counting both cores) 4 (inner and outer cores)
100
Created the Continental Drift Theory
Who is Alfred Wegener?
100
Earthquakes and Volcanoes are usually located in relation to these
What are plate boundaries?
100
The Himalayan mountains are the result of a ___________________________ boundary.
What is a 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
Evidence of matching animal fossils from two separate continents _____________________ and _____________________
What is Africa and South America? (Some other answers may be accepted.)
200
The mid-ocean ridge is an example of a ____________________ boundary and ___________________ occurs here where new ocean floor is formed.
What are divergent boundary and sea floor spreading?
200
Hot air or liquid is less ________________ than cool air or liquids
What is dense?
300
The theory that all continents are fragments of Pangaea now drifting apart
What is continental drift?
300
Plates float on top of the _______________________.
What is the asthenosphere?
300
Evidence of tropical plants were found on this continent
What is Antarctica?
300
What type of stone primarily makes up oceanic crust?
What is basalt?
300
What are the two types of forces that shape the earth's surface?
What are constructive and destructive forces?
400
States that youngest rocks of ocean floor are at diverging boundaries, moving outward
What is sea floor 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 250 million years?
400
This is the mechanism (what causes) the plates to move
What are convection currents?
400
Explain what happens when two plates converge on each other. Does it matter what types of plates they are?
Answers will vary. Focus on density, subduction, and mountain building.
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
Continental Drift Theory was not accepted because it did not explain this
What is "how" and "why" the plates were moving?
500
The 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?