Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
20 Cards in this Set
- Front
- Back
|
when a large piece of space debris crashes into a planet
|
bolide
|
|
|
open-mouthed steel net dragged along the sea floor behind a research ship
|
rock dredge
|
|
|
retrieved from the pip after it is winched back to the surface
|
core
|
|
|
commonly used to map sea floor topgraphy
|
echo sounder
|
|
|
works in the same way, but uses a higher energy signal that penetrates and reflects from layers in the sediment and rock
|
seismmic profiler
|
|
|
instrument that measures a magnetic field
|
magnetometer
|
|
|
cut across the rift valley and the ridge
|
transform faults
|
|
|
additions to our continent
|
accreted terranes
|
|
|
submarine mountain
|
seamount
|
|
|
seamount that rises above sea level
|
oceanic island
|
|
|
flat topped seamount
|
guyot
|
|
|
dotted with numerous islands
|
atoll
|
|
|
sand, silt, and clay
|
terrigenous sediment
|
|
|
collects even on the deep sea floor far from continent
|
pelagic sediment
|
|
|
occurs where continental and oceanic crust are firmly joined together
|
passive continental margin
|
|
|
occurs at a convergent plate boundary
|
active continental margin
|
|
|
submarine surface
|
continental shelf
|
|
|
limestone accumulations of this type may be hundreds of meters thick
|
carbonate platforms
|
|
|
erode the continental shelf and slope to create the submarine canyons
|
turbidity currents
|
|
|
more steep
|
continental slope
|
