Vocabulary
What is the thinnest layer of the earth?
Crust
How many main layers of the Earth are there?
4
Who created the Continental Drift Theory?
Alfred Wegener
Where are earthquakes and volcanoes usually located?
The Himalayan mountains are the result of what boundary?
Convergent
What is the term to describe a number of rigid, but moving, pieces of Earth's surface?
Tectonic Plates
What is the thickest layer of the Earth?
The Mantle
What two specific continents fit together most noticeably?
South America & Africa
Mid-ocean ridges is an example of what plate boundary?
Divergent
What natural disaster occurs due to the build up of stress at a plate boundary?
Earthquakes.
What is the name of the theory that all continents are fragments of Pangaea now drifting apart?
Continental Drift Theory
What do plates float on top of?
The asthenosphere.
True or false. Coal found in colder climates indicates that the land used to be in a warmer climate.
True
What is the mechanism that causes the plates to move?
Convection Currents
The San Andreas Fault in California is an example of what plate boundary?
Transform
What is the term that describes that youngest rocks of ocean floor are at divergent boundaries, moving outwards?
Seafloor Spreading
What is the term that describes the rigid part of the Earth including the crust and the upper mantle (makes up the plates)?
Which type of information was NOT collected by Wegener to support his continental drift hypothesis? (glacial deposits, fossils, seafloor magnetic data, rocks)
Seafloor Magnetic Data
What are three types of convergent boundaries?
Which person used sonar to map the bottom of the ocean and discovered the mid-ocean ridge in the Atlantic Ocean?
Harry Hess
What is the hottest layer of the earth, that is also solid metal?
Inner Core
Which crust is thicker?
Continental crust
Name three main types of evidence that supports Continental Drift.
Jigsaw fit like of continents, matching fossils, matching rock formations, similar ancient climate patterns.
Which plate boundary causes fault lines?
Transform
Why was continental drift theory not accepted?
It didn't explain how the continents actually moved.