Chemistry
Salts: Rivers versus oceans
Fish Adaptaions
Estuary
Miscellaneous
100
Salinity is measured in as this.
What is parts per thousand
100
These are three sources of salts in our oceans.
What is the ocean bottom, volcanic activity and rivers.
100
Fish are called this because they maintain the amount the concentration of salt and water they have internally.
What is osmoregulators.
100
This is an estuary.
What is where salt and fresh water meet.
100
These are sternohaline fish.
What are fish that can not survive a large change in salinity.
200
This is the average salinity of the open oceans.
What is 35 ppt.
200
Rivers carry this amount of salt to our oceans annually
What is 4 billion tons.
200
Specialized cells on the gills of freshwater fish do this.
What is pump salt into the fish.
200
This is what happens when river inflow into the estuaries is reduced.
What is salinity increases and nutrients decrease.
200
This is a solutuion that has a greater concentration of salts than is inside the cells of an organism.
What is hypertonic solutoion.
300
These salts , proportion-wise are much more abundant in our oceans than in our rivers.
What is sodium and chloride.
300
Fresh water fish adapt to this.
What is water gain and salt loss.
300
This is why bays and estuaries of Northern Texas are less salty than those of south Texas.
What is North Texas has more rain and greater river inflow.
300
This is the flow of water across a cell membrane because of differences in the concentration of water.
What is osmosis.
400
These are the most abundant "salts" in the ocean.
What is Sodium (Na) and Chloride (Cl-)
400
Proportionally, these three dissolved minerals are much more abundant in rivers than in the oceans.
What is calcium, bicarbonate, and silica
400
These are three adaptations of fish so that they can live in salt water.
What is drink lots of water, gills pump out salt, urine is concentrated with salts.
400
This is the name for organisms that match the concentration of salt and water in their bodies with the water ourside the organisms.
What is an osmo conformer.
500
This is how carbonic acid is formed.
What is rain plus carbon dioxide forms carbonic acid: H20 + CO2 = H2CO3
500
This is why the silica content in the oceans is much less than in the rivers.
What is diatoms (a type of phytoplankton) use it to make their homes.
500
Three adaptations of freshwater fish to survive in fresh water.
What is they do not drink water, scales to keep water out salts in, gills that pump salts in, have a lot of diluted urine.
500
These are the direct and indirect affects of a drought on the biodiversity of an estuary.
What is killing organisms directly or indirectly, killing off the food.
500
The three reasons why there is less calcium and bicarbonate in the oceans than in the rivers.
What is the formation of shells, crab and lobster exoskeketons and coral reefs.
M
e
n
u