Chapter 11-13 Flashcards
What percentage of the world is made up of water
70%
What percentage of the Northern Hemisphere is made up of water
60%
What percentage of the Southern Hemisphere is made up of water
80%
How long is the mid-ocean ridge
65,000 km
What are the characteristics of passive continental edges?
canyons and rivers
What do turbidity fans come from
turbidity flows
What do passive margins result in
submerged coastlines
What can generally develop a turbidity current
earthquakes
what releases from the mid-ocean ridge that attracts animals
black smoke that filled with nutrients
Photoic zone
top 300 feet of water and the only area where sunlight will penetrate
aphotic zone
area after the photoic zone where the sunlight will not penetrate
what is at the top of the photic zone and has the highest concentration of sunlight
euphotic zone
What is the name for an animal that is a bottom dweller/ bottom feeder
Benthic
what is the bottom-most part of the ocean called
abyssal plain
diatoms
a prehistoric animal that still exists today that has over 200,000 species