Chapter 11-13 Flashcards
(39 cards)
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
Copepods
the primary food of whales (think nemo)
when is the highest production of phytoplankton
between march and april
are coral reefs plants or animals
animals
What do coral reefs do to islands
they grab onto them, slowly dragging them into the sea
spring tides
- occur when the moon and sun are aligned with a particular side of the Earth
- much more pronounced than neap
Neap tides
the main influence is the moon only
which types of currents come in at an angle and move things down the beach
longshore currents
What is the most common gas in the air
nitrogen
the bottom level of the atmosphere
troposphere