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WorksheetsOceans - Unit 4 Review
Total questions: 32
Worksheet time: 24mins
______ causes deep ocean currents
The Coriolis Effect
gravity
wind
density differences
______ causes surface currents.
The Coriolis Effect
gravity
density differences
wind
Which order shows ocean layers from most shallow to deepest?
Upper mixed layer → Main Thermocline → Deep Bottom Water
Upper mixed layer → Deep Bottom Water → Main Thermocline
Deep Bottom Water → Main Thermocline → Upper mixed layer
Main Thermocline → Deep Bottom Water → Upper mixed layer
What is a thermocline?
A rapid change in temperature with depth
A rapid change in temperature with latitude
A rapid change in salinity with depth
A rapid change in density with depth
El Niño ___________________ the trade winds causing the warm pool to move ___________.
weakens or reverses; west
intensifies; east
weakens or reverses; east
intensifies; east
______________ causes more rainfall in the Northwest United States and poor fishing off the coast of South America (Peru).
La Nina
El NIno
El Baby Yoda
La Chancla
When La Nina and hurricanes pull cold water to the surface and bring nutrient rich sediments from the seafloor, this is called ___________________.
upwelling
downwelling
El zapato
La Gloria
Why do the fisherman of Peru and South America not welcome a strong El Nino?
El Nino poisons the fish
El Nino causes strong winds and currents which move fish westward
El Nino bring cold water to the surface which kills the base of the food chain
El Nino shuts off upwelling and nutrients needed for the marine food chain do not rise to the surface
What is the definition of the tragedy of the commons?
When humans overuse a natural resource
When the short-term, positive effects go to the individual, while the long-term, negative effects are spread out to the group
When humans act selfishly, thinking of their own self-interest
When plants and animals compete for space, resources, and/or food
What is overfishing?
The removal of bad fish from a environment
The removal of fish/ species of fish from a body of water at a rate that the species can not replenish in time.
The removal of dead fish from a body of water
What is a negative consequence of overgrazing?
vegetation or grass is damaged and the ground can no longer be used for feeding or agriculture.
your animals cannot graze for one day
your animals get sick
What is overgrazing?
When cows eat so much they get sick and throw up
When a section of land is used for extended periods of time, or without sufficient recovery periods.
When horses eat too much grass
Which organism in the food web shown to the right would
contain the lowest concentration of chemical pollutants?
producers
primary consumers
secondary consumers
tertiary consumers
The phenomenon by which toxins concentrate in the organisms at higher trophic levels within an ecosystem is known as...
Biotoxicity
Biomagnification
Eutrophication
Predation
Consider the following food chain:
Algae > Mayfly > Minnow > Trout
In a polluted ecosystem, which organism would likely have the HIGHEST level of toxic chemicals in its body?
Algae
Mayfly
Minnow
Trout
Water with _____ salinity and _____ temperature will be the MOST dense.
higher, lower
higher, higher
lower, higher
lower, lower
What is a process that increases the ocean's salinity?
runoff
precipitation
melting of galciers
evaporation
If there is lots of precipitation in a salty water lake, the salinity of the water will increase or decrease?
Decrease
Increase
Stay the same
Both
