Marine Bio: Plate Tectonics

Home

Get App

Create

what's convergent?

-> <-
what's divergent?

<- ->
what's transform?
- ->
- <-
what is 1 fathom?

6 ft increments
what's echo sounding?

a meathod of measuring seafloor depth using sound pulses
what's bathymetry

measuring the deep
what were the three advancements of measuring the sea floor?
- 1. leadline
- 2. single beam
- 3. multi
what's a continental shelf

shallow extension of the landmass. mostly flat
what's a continental slope?

steep slope beyond the continental shelf that transitions to deep ocean floor
what's a continental rise?

gentle slope often made by accumulated sediments
what are submarine canyons?
- found on continental slopes.
- narrow v shaped canyons with steep slopes.
- usually formed with river systems that cut intot he shelf (erosion)
what's an abyssal plain?

section of ocean basin floor that are FLAT
when do abyssal plaines normally form?

after continental rise
what are abyssal hills?

small hills less than 1000 m high.
how are seamounts formed?

by volcanoes
description of inner core?
- -solid, very dense b/c od high amounts of pressure
- -rich in Fe, Ni. Magnetized and very hot
- -12000* farenheit
outer core descriptions
- liquid layer
- rich in fe and ni
mantle
- largest, thickest layer of the earth
- composed of magnesium, iron
- solid yet mobile
- hot and deformable
crust description
- solid layer of rock
- way colder than interior layers
what are the 2 types of crusts?

oceanic, continental
oceanic crust is made of

basalt
continental is made of

granite
convection currents

currents that carry continental and oceanic plates

Author

bananavocado

172011

Card Set

Marine Bio: Plate Tectonics

Description

Marine Bio: Plate Tectonics

Updated

2012-12-14T01:18:34Z

Show Answers