Earth Layers
The layer of the Earth beneath the mantle and is comprised of a liquid metal.
What is the Outer Core
The theory that continents have drifted slowly apart.
What is Continental Drift ?
What is the Driving Force behind the movement of Tectonic Plates ?
What are Convection Currents ?
Name the 3 different stresses plate movement can put on the Earths crust.
Tension, Compression, Shearing
A weak spot in the crust where molten material, or magma, comes to the surface.
What is a Volcano ?
The surface layer of the Earth and is comprised of solid rock.
What is the Crust
When the sea-floor moves apart on both sides of a mid ocean ridge
What is Sea-Floor Spreading ?
The Edges of Earth's plate meet at . .
What are Plate Boundaries ?
Name the 3 different faults that can form on Earths crust
Normal, Reverse, Strike-slip .
__________is a molten mixture of rock-forming substances, gases, and water from the mantle. When _______ reaches the surface, it is called ______.
Magma , Lava
A layer of hot rock beneath the surface of the Earth. Split into two pieces: The Lithosphere & Asthenosphere
What is the Mantle ?
The process where the Crust is recycled back inside the Earth as the ocean floor spreads.
What is Subduction ?
The Earth’s lithosphere is made up of separate jagged edged plates that surround the mantle similar to a . .
What is a cracked Eggshell ?
How is Energy spread from an Earthquake ?
What are Seismic Waves ?
Most volcanoes are located in a region in the Pacific Ocean called . .
What is the Ring of Fire ?
List The layers of the Earth in Order from Top to Bottom.
Crust, Lithosphere, Asthenosphere, Outer Core, Inner Core
Scientist Alfred Wegner proposed the idea of Continental Drift. What two pieces of evidence did he use to support this theory.
Alfred Wegener used the evidence that mountain ranges and different continents if pushed together would fit perfectly. He also used fossils as evidence. The appearance of certain fossils in very separated areas show those places at one time in history were probably a lot closer.
What are 3 types of plate boundaries ?
Divergent ( Moving Apart)
Convergent ( Coming together)
Transform ( Moving side by side in opposite directions)
Earthquakes start underground at the Focus and travel to the _________ which is located on the surface directly above .
What is the Epicenter ?
List the 5 Different Parts of a Volcano ?
Magma Chamber, Pipe, Vent, Crater, Lava Flow
Name two ways scientist study Earths Interior.
Studying Rock samples and Seismic waves.
How does the processes of Subduction and Sea-floor spreading relate back to Continental Drift ?
The processes of subduction and sea-floor spreading relate back to the theory of continental drift because they spread and move the sea floor like a conveyor belt. If the sea floor, which is part of the crust of the Earth, is moving like on a conveyor belt then the continents, which are also part of the crust, must also move.
Rock heated by the core rises to the surface of the mantle where it cools and then falls back down
What are convection currents ?
__ Waves - Makes the ground roll like ocean waves
__ Waves - Compress and expand the ground like an Accordion
__ Waves - Vibrate side to side, as well as Up and Down
Surface Waves
P-Primary Waves
S-Secondary Waves