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FCPS 4th Grade Oceans Flashcards | StudBud
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FCPS 4th Grade Oceans
FCPS 4th Grade Oceans
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1
Algae in the ocean provide much of Earth’s -
nitrogen
hydrogen
carbon dioxide
oxygen
2
Which of the following definitions
correctly
describes letter C in the diagram above?
The steep slope down to the ocean floor
The true ocean floor that has a flat, smooth surface
The area where the continent ends and the ocean floor begins
The gently sloping area of a continent covered by ocean water
3
Algae and other producers need lots of sunlight. Most ocean algae would be found in the water -
on the abyssal plain
above the continental shelf
in the oceanic trench
beside the continental slope
4
The Zooplankton in this food chain get their energy from consuming the -
shrimp
damselfish
barracuda
algae
5
Which conclusion
cannot
be made from the picture?
The depth of the trench is greater than the depth of the abyssal plain.
The depth of the abyssal plain is greater than the depth of the trench.
The depth of the slope is greater than the depth of the shelf.
The depth of the slope is less than the depth of the abyssal plain.
6
Surface ocean currents move along the coastlines of the continents. What causes the water to move like this?
The polar caps
The tectonic plates
The winds
The moon
7
Study the marine food web. Which organism is a producer?
phytoplankton
dolphin
zooplankton
shark
8
Which of these are the deepest parts of the ocean?
Ocean trenches
Continental slopes
Abyssal plains
Continental shelves
9
Which of these statements describes how heat is moved around in Earth's oceans?
Tides happens two times a day, washing heat from the sand into the ocean
Warm winds blow over the oceans from land, then the ocean water to warm up.
Waves are created by wind, this warms the water and pushes it around
Warmer water from the Equator goes to the poles, then the water cools/sinks
10
In which part of the ocean would you expect to find the lowest levels of salinity?
in the middle of the ocean
on the ocean floor
in the Gulf Stream
near a river mouth
11
Winds and the rotation of Earth affect what aspect of the ocean?
Salt content
Tides
Currents
The ocean floor
12
What do the arrows on the map represent?
Size of waves
Ocean currents
Time between tides
Water density
13
Look at the diagram. What conclusion about salinity can be made?
The salinity of the ocean near the river will not change.
The salinity of the river near the ocean will decrease.
The salinity of the ocean near the river will decrease.
The salinity of the ocean near the river will increase.
14
Sailors long ago would catch the current off the coast of Virginia. This current would help them get to -
South America
Europe
Southern Africa
Central America
15
Which pair of organisms needs to switch places for the ocean food chain to be correct?
Animal-like plankton and fish
White shark and animal-like plankton
White shark and phytoplankton
Phytoplankton and fish
16
The main difference between ocean water and lake water is that ocean water contains -
plants
oxygen
salt
algae
17
The Atlantic Ocean has salt dissolved in the water. Which of these does not impact the level of salinity?
Length of the continental shelf
Melting icebergs
Amount of runoff
Depth of the ocean water
18
A scientist used a straw to blow air across a container of water in order to model the formation of -
Regions of high salinity
Surface currents
High and low tides
Rivers and streams
19
Which of the following ocean features is the
most
shallow?
Abyssal plain
Continental slope
Ocean trenches
Continental shelf
20
Submarines have explored parts of the ocean. As submarines descend, scientists observe that there is an increase in the
water temperature
types of ocean organisms
amount of light
water pressure
21
The ocean floor -
is covered by the same amount of water everywhere
covers less area than the land
has mountains, plains, and ridges like land surfaces
is always a flat bed of sand
22
The gently sloping area of a continent covered by ocean water is called the -
continental shelf
continental current
continental slope
continental rise
23
Which of the following would be useful in locating a sunken ship at the bottom of the ocean?
Telescope
Lasers
Morse code
Sonar
24
Humpback whales swim at many different levels of the ocean.
decreased pressure
increased amount of sunlight
no other organisms
increased salinity
25
Where? --> greatest water pressure, the coldest temperatures, and the least number of living organisms?
3
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