Oceans
What causes tides?
The pull of the Moon, ocean currents, wind
What causes waves?
There caused by winds
What are currents?
a body of water or air moving in a definite direction
Where is the location of the Midnight Zone?
below the ocean surface, 3280 ft to 13000 ft
Why are estuaries known to have brackish water?
a mixture of fresh water draining from the land and salty seawater.
What can cause salinity of the ocean to increase?
Evaporation of ocean water and formation of sea ice both increase the salinity of the ocean.
What are threats to estuaries?
Boats
How many Zones is there?
5
What are corals reefs?
Coral reefs are large underwater structures composed of the skeletons of coral, which are marine invertebrate animals.
How do estuaries act as a nursery?
Nurseries of the sea because so many species reproduce and the offspring start out there
Why do most organisms live in the sunlit zone?
there's a lot of sunlight in the neritic zone, green plants grow there, providing a high oxygen
Which zone is the biggest?
sunlit zone
What animals live in the photic zone
Fish, Turtles , Seeweed
Name all of the ocean zones in order from the top to the bottom
Sunlit Twilight Midnight Abyssal and Hadal
What types of animals live in the intertidal zones?
Sea stars, Green algae
Why is the sunlit zone important
Photosynthesis must take place for the producers of the ocean
How is upwelling important for humans and marine life?
The deeper water that rises to the surface during upwelling is rich in nutrients.
What is one of the major problems facing our oceans?
Contamination, Pollution
What causes upwellings in oceans?
Upwelling often happens where wind blows along a coastline.
Which zones of the ocean does photosynthesis occur?
Sunlight Zone
In which ocean zone will you find the following: Highest pressure?
Hadal
What two factors can cause the salinity of the ocean to decrease?
Evaporation increases the salinity of seawater because when seawater evaporates, the salts are left behind
How does salinity affect the type of organisms that live there?
Many marine organisms are highly affected by changes in salinity. This is because of a process called osmosis
What two things do upwellings bring to the surface of the ocean?
cold water,Fish