What are the long, deep, narrow canyons in the sea floor plains called?
What is trenches
100
What percentage of the earth is covered by the oceans?
What is 70%
100
Which is the correct definition of a current?
a) a river
b) a change in water temperature
c) a strong flow of water
d) a tidal wave
What is "C"
100
Ocean water is......
a) brackish water
b) spring water
c) salt water
d) fresh water
What is "C"
100
Which ocean organisms produce much of the earth's oxygen and are the base of the ocean ecosystem?
a) animal-like plankton
b) phytoplankton
c) nekton
d) benthos
What is "B"
200
Which part of the ocean floor is very deep, smooth, and flat?
What is the abyssal plain
200
What causes the waves in the ocean?
a) wind
b) animals
c) sand
d) sun
What is "A"
200
Ocean currents are caused by......
a) winds
b) salinity
c) tides
d) temperature
What is "A"
200
Submarines have explored many parts of the ocean. As submarines descend, scientists observe that there is an increase in the.....
a) water temperature
b) types of ocean organisms
c) water pressure
d) amount of light
What is "C"
200
Which example is a predator in an ocean food chain?
a) phytoplankton
b) zooplankton
c) shark
d) bristle worm
What is "C"
300
The ocean floor....
a) is always a flat bed of sand
b) covers less area than the land
c) is covered by the same amount of water everywhere
d) has mountains, plains, and ridges like land surfaces
What is "D"
300
The rise and fall in the level of the ocean along the shore is a?
What is Tide
300
Look at the oceans currents map. Where is the Gulf Stream located?
What is see what student points to
300
What happens to ocean water as the depth increases (temperature, pressure, light)
What is Temperature decreases, pressure increases, light decreases
300
Which item is a producer in an ocean food chain?
a) bristle worm
b) anchovy
c) shark
d) phytoplankton
What is "D"
400
The continental shelf is shallower, wider, and less steep than the......
a) slope
b) abyssal plains
c) trench
d) continental divide
What is "a"
400
The major surface currents in the ocean are kept in motion by?
a) warm water forcing cool water to rise
b) winds blowing in the same direction
c) large storms such as hurricanes and blizzards
d) cold water sinking under warm water
What is "B"
400
Which of the following helps to regulate temperatures around the earth?
a) The western side of the ocean becomes deeper
b) Ocean currents transport warm water from the Equator to the polar regions
c) Ocean currents transport rainwater to the 7 continents around the world.
d) The sun shines more on the western hemisphere.
What is "B"
400
What is the relationship between temperature, pressure,a nd salinity as the depth of the ocean water increases?
Temperature___________
Pressure __________
Salinity __________
What is decreases, increases, increases
400
A coral reef is.....
a) an ecosystem
b) an ocean current
c) a rock
d) an underwater cave
What is "A"
500
Which best describes the part of the ocean called the continental shelf?
a) A region of mountains in the deep ocean
b) A shallow area of sediment near the shore
c) A region with a higher water pressure
d) A flat underwater valley
What is "B"
500
Which statements are true about organisms that live on the continental shelf of the ocean?
a) These organisms live deep in the water
b) These organisms live in water with a specific salinity
c) These organisms live in a very cold and dark part of the ocean
d) These organisms survive the best among warmer temperatures.
What is "B" and "D"
500
Which of the following does NOT create an ocean current?
a) wind patterns
b) differences in salinity
c) amount of nutrients
d) differences in temperature
What is "C"
500
What 3 things influence where organisms live in the ocean?
What is temperature, pressure, light
500
Which of the following is NOT a way that inter-tidal organisms protect themselves from predators?
a) Hiding under rocks
b) closing their shells tightly
c) burying themselves in the sand
d) riding the tide to the sand beach