5.1 Plate Tectonics
Who is the scientist responsible for the theory or continental drift?
-Alfred Wegner
This runs down the middle of the Atlantic and is growing at 1 cm/year
The mid-Atlantic ridge
Seamounts with their tops flattened due to erosion or wave action would be considered:
Guyots
Hydrothermal vents are responsible for removing more of this element than any other method on the planet.
Magnesium
This information is stored in rocks made at divergent boundaries. [Hint: you need a compass]
Magnetic material or Paleomagnetism
Flat coastal plains would be what kind of margin? (Active or passive?
A passive margin
When were hydrothermal vents first discovered?
1977
Earthquakes and Volcanoes are usually located in relation to these
What is a plate boundary
This is a steep slope between the continental shelf and the ocean floor.
Continental Slope
Approximately how deep are hydrothermal vents located?
2000 meters or deeper
List the types of rock each crust is made of
Oceanic Crust- Basalt
Continental Crust- Granite
Volcanic island chains are made using this theory:
Hot spot theory
These are underwater volcanoes or mountains formed by volcanic activity.
Seamounts
The bacteria surrounding the vents use energy from chemicals to form carbohydrates for food, this is the process of:
Chemosynthesis
Although the hottest layer of the Earth, this layer is solid metal
What is the inner core
If the mid-Atlantic ridge runs through Iceland, the country would be (shrinking/growing).
Growing
True or False: The mid-ocean ridge is the largest geological feature on the Earth
True
What three elements are responsible for making the chimney of hydrothermal vents?
Copper, Iron, and Zinc