Interior of Earth
Plate Tectonics
Volcanoes
Plate Motion
Hodge Podge
100
Why is the earth still so hot inside?
Radioactive Decay
100
What is the name of the location where oceanic crust being formed?
Ocean Ridges or Rifts
100
Why has Hawaii, a chain of volcanic islands, formed far away from the plate boundaries?
It has formed over a hot spot
100
What type of boundary creates a mid-ocean ridge?
Oceanic-Oceanic Divergent
100
What continent is East of North America?
Europe
200
Why is the earth divided into 5 physical layers?
To describe how the different layers of the earth behave--how the earthquake waves travel through the layers differently.
200
At what location in the ocean would you expect to find the oldest ocean crust?
near the trenches
200
If these islands formed at a hotspot, Which direction is the plate moving?
North West
200
What type of land feature forms at a Continental-Oceanic Convergent boundary?
Volcanic Mountains like the Andes
200
Which mountain range was split in half long ago by Pangaea separating, and what two continents does it reside on?
The Appalachian Mountains, and North America and Europe
300
List the layers of the earth by chemical composition
Crust, Mantle, Core
300
Name 2 evidences of continental drift (Wegener's evidence)
Matching mountain ranges/rock types and formations
Same animal fossils on different continents
Glacial evidence
Continents appear to fit together like puzzle pieces
300
Which Volcano is the Oldest?
Triton
300
How does the density of oceanic and continental plates affect their movement on Earth?
More dense plates subduct at convergent plate boundaries
300
Which of the seismic waves don't travel through which layer of the earth? Why is that?
S waves don't travel through the outer core of the earth because it is liquid
400
What are the 5 physical layers of the earth?
Lithosphere, Asthenosphere, Mesosphere, Outer Core, Inner Core
400
If you map earthquakes and volcanoes on the Earth, what conclusion do scientists draw based on the location of these earthquakes and volcanoes?
Earthquakes and volcanoes mostly occur at plate boundaries
400
What type of plate boundary created Japan?
Oceanic-Oceanic-Convergent
400
What land feature is formed at a continental-continental divergent boundary? Give an example of this boundary on Earth.
Rift Valley, East African Rift Zone
400
What is the meaning of the three circles used to triangulate an earthquake?
The center of each circle is a seismograph station that received a seismic wave from 1 earthquake. The distance between the s and p waves tell the seismic station how far away that earthquake could have been. 1 station will narrow down the distance to the earthquake to anywhere on the circle, 2 stations will narrow down the earthquake location to the 2 intersecting points, and 3 (or more) stations will intersect at only 1 point--the location of the earthquake.
500
If the outer core of the earth was cooler than it is now, what would be the effect on plate tectonics?
Convection currents would move more slowly, so plate motion would slow or stop.
500
Describe the major evidences of seafloor spreading--what do scientists observe with their eyes and instruments?
-The existence of ridges and trenches
-the age of the seafloor rocks increases as you move away from the ridge
-the magnetic stripes show the floor forms slowly and records the shifting of magnetic north
500
If the plate motion changed and the plate started moving directly West, where would you expect the next volcano to form?
directly East of Flounder
500
How does the Pacific Plate's movement to the North West affect California?
Transform Boundary, Earthquakes
500
Name the 7 continents and 5 oceans
North America, South America, Europe, Asia, Australia, Africa, Antarctica
Pacific, Atlantic, Indian, Arctic, Southern