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Leo Piazza
Chesapeake Bay Watershed 2
41
Science
7th Grade
10/07/2013

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Cards

Term
What Does Sav stand for?
Definition
Submerged aquatic vegitation.
Term
Why are Sav's important?
Definition
Food source (geese, ducks,crabs)
Habitat (crabs, small fish)
Traps sediment, protects floor from erosion
Provides H2O
Term
Why are Sav's disappering?
Definition
Sediment smothers and blocks sunlight
Too many nutriants (fertalizer, sewage treatment plows)
Chemicals kill it (oil, lawn chemicals)
Term
Larvae
Definition
first stage of a crab
Term
Sooks
Definition
another name of a female crab
Term
Jimmies
Definition
another name of a male carb
Term
Molt
Definition
to shed their shell
Term
Zoea
Definition
the name of a small larvea crab
Term
megalops
Definition
the secound stage of a crab
Term
average life of a crab
Definition
one to three years
Term
How many legs do a blue crab have?
Definition
ten legs
Term
exoskeleton
Definition
it is its own coat of armor. It is also a hard covering with spikes
Term
How many crabs out of four are cooked and eaten each year?
Definition
3/4 or %75
Term
What are juvenile oysters called?
Definition
Spat
Term
What is the legal size that a crab has to be in order to be caught and easten?
Definition
five inches
Term
What geder are oysters?
Definition
The have no designated gender they are bisexual/ both
Term
How do oysters eat?
Definition
Oysters eat by sucking water into their shells and filtering out small plants called phytoplankton.
Term
True or False? Oysters were once so abundant that they could filter the bay in three to four days.
Definition
true.
Term
What percent of the historic population of oysters are still remaining?
Definition
less than one percent 1%
Term
What have led to the oysters' demise?
Definition
What led to the oysters decrees in population 1. Overharvesting 2. MSX and Dermo 3.the sediment from land development.
Term
What are plankton?
Definition
they are organisums which drift with the current.
Term
True or False? phytoplankton are the most numerous in the bay, and there most common form is algae.
Definition
True
Term
What are copepods?
Definition
They are zooplankton that never grow to be bigger than a tip of a pencil.
Term
What is a food web?
Definition
It is a web where the bigger animals eat the smaller animals.
Example: Osprey and Heron eat large fish, large fish eat small fish, small fish eat Zoplankton, Zooplankton eat Phytoplankton.
Term
what is another name for a rockfish?
Definition
striped bass
Term
what is a moratorium
Definition
a bane on somthing
Term
what do mature rockfish eat
Definition
soft crabs and eel
Term
where do rockfish spend their adult hood?
Definition
the ocean
Term
where do juvunile rockfish live
Definition
the marshs because of food and protection
Term
what is counter shadding?
Definition
counter shading is a type of camoflauge
Term
Why have rockfished recovered
Definition
rockfish have revovered because of the 5 year moritorium and they have restored spawning beds
Term
How do manhaden eat?
Definition
Manhaden eat by filtering the water and that allows sun to get to sav's
Term
What do they eat?
Definition
phytoplankton/ algea
Term
What are their predators?
Definition
Brids, rockfish, blufish, humans
Term
What do humans use them for?
Definition
Lipstick, dog food, bait for crabs and other fish, cheese baccon etc.
Term
What is Omega Orotien? What do they do?
Definition
Omega protien is the proces of people in helacopters and they look for schools of manhaden and catch most of them. It is also the process of manhaden
Term
What determins wheather the turtle is male or female.
Definition
If it is cold outside then it will become a male, but if it is warm outside then it will become a female
Term
What do diamondback turtles eat?
Definition
Mollusk, small fish, and mussels etc
Term
How do you know how old a turtle is?
Definition
You count the markings on the shell
Term
True or False? The male diamondback is smaller than the female?
Definition
True- the female is larger than the male
Term
Why has the diamondback population decreased?
Definition
The diamondback population had decreased a lot because we killed them and put them in soup
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