Physical Characteristics
Which phrase describes salinity?
a. amount of polluted water
b. amount of sand in water
c. number of populations living in water
d. amount of salt in water
d. amount of salt in water
what connects the continental shelf and the continental rise?
a. ocean trenchb. mid-ocean ridge
c. abyssal plain
d. continental slope
d. continental slope
What are the 3 basic motions of the ocean?
waves, tides and currents
Which two organisms need to switch in this food chain?
plankton -> shark -> large fish -> small fish
shark and small fish
CORRECT ORDER:
plankton -> small fish -> large fish -> shark
Choose all that are true about phytoplankton:
a. animal-like
b. have flowers
c. producers
d. free-floating
e. basis of all food webs in the ocean
c. producers
d. free-floating
e. basis of all food webs in the ocean
Why do scientists need special suits to study the ocean deep? (choose all the correct answers)
a. deeper the scientist goes, less light there is
b. there is too much salt in the water
c. as the scientist dives deeper, his suit protects him from increased pressure
d. as the scientist dives deeper, the temperature gets colder
a. deeper the scientist goes, less light there is
c. as the scientist dives deeper, his suit protects him from increased pressure
d. as the scientist dives deeper, the temperature gets colder
Which describes the continental shelf:
a. a flat underwater valley
b. a region of mountains in the deep ocean
c. a region with high pressure
d. a shallow area of sediment near the shore
d. a shallow area of sediment near the shore
What is a current?
a. the up and down motion of the water
b. the rise and fall of the level ocean water
c. a strong flow of water
d. change in water temperature
c. a strong flow of water
What would happen to the ocean food web if phytoplankton died off?
a. they would reproduce faster
b. they would live longer
c. they would eventually die also
c. they would eventually die also
Where might a squid live if it lives in the deepest part of the ocean?
a. continental shelf
b. ocean trench
c. abyssal plain
d. continental slope
c. abyssal plain
What two things increase as depth increases?
a. temperature
b. pressure
c. light
d. salinity
b. pressure and c. salinity
Which describe the abyssal plain?
a. deep
b. a lot of sunlight
c. flat
d. sloping
a. deep
b. flat
What causes the ocean water to rise and fall?
a. ocean currents
b. ocean waves
c. ocean tides
*think about the side by side pictures of the boat at the dock - picture 1 shows high water and picture 2 shows low water*
c. ocean tides
What organism belongs in the blank?
plankton -> _______ -> seal -> shark
a. squid
b. fish
c. turtle
b. fish
Most ocean organisms live in the:
a. sunlight zone
b. twilight zone
c. midnight-abyss zone
a. sunlight zone
What two things decrease as depth increases?
a. temperature
b. pressure
c. light
d. salinity
a. temperature and c. light
The Ocean Floor -
a. is a flat bed of sand
b. has mountains, plains and ridges like land
c. covers less area than the land
d. is covered by the same amount of water everywhere
b. has mountains, plains and ridges like land.
Where does the Gulf Stream Current carry warm water?
a. North America to Europe
b. Europe to North America
a. North America to Europe
Food chains show flow of ______
a. water
b. energy
c. light
d. temperature
b. energy
worm -> bird -> fox
(the worm IS EATEN BY the bird, the bird IS EATEN BY the fox)
Coral reefs are located mostly near the equator because....
a. they don't have many living things there
b. they like it
c. they need warm water
c. they need warm water
Which does NOT determine physical characteristics (waves, tides, currents, temperature, pressure, etc.) of the ocean
a. depth
b. phytoplankton
c. salinity
d. wave formation
b. phytoplankton
*depth, salinity and wave formation determine physical characteristics of the ocean
The continental rise is formed when ....
a. sediments are deposited at the bottom of the continental slope
b. sediments are deposited at the bottom of the ocean trench
c. sediments are deposited at the bottom of the continental shelf
a. sediments are deposited at the bottom of the continental slope
What is the main cause of waves?
wind
True or False: Producers are at the bottom of a food web and the beginning of a food chain.
TRUE
A Coral Reef is
a. a rock
b. a current
c. an ecosystem
d. an underwater cave
c. an ecosystem