oceanography

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the purpose of the voyage
to study humpback whales
what is oceanography?
the study of earth’s oceans
what are the oceans?
Pacific, Atlantic, Indian, Arctic, and Atlantic
fo’c’sle
the foward-most part of the boat or ship that is used as sleeping quarters
marine bioligist
a scientist who specializes in animals and plants that live in the ocean
oceanographer
scientist who studies the physical characteristics of the earth’s oceans
port
left side of the boat
starboard
right side of the boat
saloon
a large cabin on a boat used for general purposes
environment
everything surrounding and affecting a living thing
habitat
particular surrounding where an organism lives
evolution
the process of gradual change by which organisms adapt to their environment
mammal
an animal with distingusihing characteristics who nurse their young and have hair
the average ocean depth
two miles
the deepest ocean depth
7 miles:the Marina Trench
the ocean provides us with
food and steady temperature and climate in a particular area
how much heat is collected by the ocean?
two thirds
when is warmth released?
at night
how much seafood is taken from the sea each year?
84 million tons
what are 3 reasons humans can’t survive under water?
temperature, air, and pressure
breach
when a whale leaps almost completely out of thw water and flops back down
lobtail
when a whale slaps its fluke on the surface of the water
fluke
flat part of a whale’s tail
dorsal fin
fin on the back of a whale
bow
front of the boat
stern
back of the boat
staysail
a sail set on a rope
belay
to secure a rope by winding it around something like a hook
crow’s nest
platform used as a lookout
halyard
a rope used to raise or lower a sail
sloop
boat with one sail
furling line
a rope used to gather a sail not in use
what size were the first whales?
small pig
what type of groups do whales travel in?
pods
baleen
a material that grows from the upper jaw of some whales; it’s used to filter food from the water
mysticete
whale with baleen
odontocete
whale with teeth
callosities
tough wartlike growth on the head of right whales
pods
group of whales
whales are called
cetaceans
the two groups of cetaceans
mysticetes and odontocetes
right whale
considered the most endangered whale
what made the right whale easy to hunt?
slow moving, very trusting, floated when killed, and provided large amounts of oil
why do whales travel to the caribbean during winter?
because of warm waters
why do whales travel North in the summer
because they haven’t eaten for 4 months
what makes the ocean salty?
dissolved minerals
what’s the number one mineral?
salt
salinity
a measure of the amount of dissolved salts and other solids in a given amount of liquid
what increases salinity?
evaporation
what type of weather makes evaporation occur quickly?
hot weather
What are the temperate zones?
Surface, Thermocline, and Deep
How far does Surface go to?
up to 300 m
How far does Thermocline go to?
300-700 m
How far does Deep go to?
700 m-ocean floor
Submersibles
underwater research vehicles
1st submersible was:
Trieste
Alvin
mini sub, used to research sunken ships and landforms
Deepflight
was an underwater airplane
SONAR
sound navigation and ranging
What does SONAR do?
calculates ocean depths
How fast does sound travel through water?
1500 m/ sec
what is the formula for SONAR?
wave is sent from boat, hits and bounces off ocean floor, then wave returns to boat
How do you find the ocean depth?
divide the seconds by two and then multiply it by 1,500
Categories: Oceanography