Currents
Properties of Seawater
Voyaging/Navigation
Earth's Layers
Tectonic Plates
100
Major Driver of Surface Currents
What is Wind?
100
Saltwater is __________ dense than freshwater
What is More?
100
The name for using traditional Polynesian methods for crossing vast oceans
What is Wayfinding or Voyaging?
100
Solid, Iron, Hotter than the sun
What is the Inner Core?
100
Movement of tectonic plates can be measured by___(Distance)/____(Time)
What is cm/year?
200
A circular pattern of currents that surrounds an ocean basin
What is a Gyre?
200
_________ Increases by a factor of 1 for every 10M of depth
What is Pressure?
200
Using the "movements" of the sun, moon and stars to know your location
What is Celestial Navigation?
200
Earth's outer layer, made up of mountains, valleys, oceans and plains, where every living thing on the planet has ever lived
What is the crust?
200
Plumes of magma in the Asthenosphere that move away from the core, then sink back, causing tectonic plate movement
What are Convection Currents?
300
Surface Currents bring _________ Water towards the Equator, and __________ Water towards the Poles
What is Cold/Warm?
300
The upward force that a fluid (like water) exerts on an object
What is Bouyancy?
300
The Hawaiian word for:
What is Wa'a?
300
A thick layer of semi-liquid, molten rock that may move tectonic plates
What is the Mantle?
300
These plate boundaries separate plates, like at mid-ocean ridges
What is Divergent?
400
Deflection of wind and currents due to the rotation of the earth
What is the Coriolis Effect?
400
Halocline
What is the layer that separates water based on salinity?
400
One of two ways Wayfinders can tell they are close to land
What are Birds or Change in Waves?
400
This layer consists of the deepest part of the crust and the upper part of the mantle, underneath the tectonic plates
What is the Lithosphere?
400
These plate boundaries move plates together, forming ___________ and __________________
What is Convergent, Trenches and Mountains
500
Due to the Coriolis Effect, Currents circulate this direction in the Southern Hemisphere
What is Counter-Clockwise?
500
The name for the layer that separates water based on Temperature
What is the Thermocline?
500
You can memorize this to know where you are based on the stars
What is a sky chart?
500
The name and Components of the YELLOW layer in the image
What is the Outer Core?-Nickel, Iron, Molten Rock
500
Tectonic plates slip past each other at this boundary, causing earthquakes
What is a Transform boundary?
600
The "Global Ocean Conveyor Belt" is driven by this type of circulation
What is "ThermoHaline"? OR Salt/Temperature
600
35 Parts per Thousand, or 350/00
What is Average Ocean Salinity?
600
Several ways Southeast Alaskan navigators could/can determine direction (name 2)
What are Weather/Tide/Currents/Water Color/Animals?
600
The heaviest of the two types of Crust
What is Oceanic?
600
A persistent weak layer in the crust where magma leaks through from the mantle, for example, The Canary Islands
What is a hot spot?