Science-Oceans Flashcards
neap tide
when the sun, moon, and earth form a right angle
spring tide
when the sun, moon, and earth form a line
ocean resources-name at least 3
oil, minerals, salt, gold, copper, zinc, diamonds, sand, gravel
what creates surface currents?
wind
what creates deep currents?
temperature, salinity
where does the salt in water come from?
vents, rivers, rocks
where is there more salinity in water
topical, equator, warm climates
where is there less salinity
north, south, cold climates
riptide
a strong current formed by tidal flow
how can we get energy from the ocean
wave energy, tidal energy, thermal conversion energy
continental shelf
a broad, shallow underwater terrace that slopes out from the shoreline
continental margin
all of the parts of the ocean floor that are a part of the Continental plate
tidal range
the difference in water height between high tide and low tide
moon
the body whose gravity most impacts the tides on Earth
salinity
the measure of salt in a given amount of liquid
crest
the highest part of a wavet
trough
the lowest part of the wave
continental rise
the portion of the ocean floor that marks the edge of the oceanic plate on the deep ocean floor
seamount/oceanic ridges
an underwater mountain that rises at least 1,000 feet above the seafloor
desalination
the process of removing salt from the ocean water to get freshwater
distillation
uses boiling to get the salt removed-but it is very expensive
what method was used in 100 BC to explore the ocean
line and sinker
what was used in the 1800’s to explore the ocean
sumersibles
Nautilus
first to be able to stay submerged for the longest period of time
