WorksheetsOcean Floor Conditions, Features, and Waves
Total questions: 23
Worksheet time: 12mins
What symbolizes a seamount?
2
3
4
8
What symbolizes the abyssal plain?
1
3
6
7
What symbolizes the continental shelf?
1
2
4
7
What symbolizes a trench?
3
5
6
7
Which of the following characteristics alters the density of ocean water?
temperature and wave speed
salinity and temperature
wave speed and wave size
wave size and salinity
Which of the following would cause surface ocean water to have a higher salt content?
the flowing of a river into the ocean
the melting of sea ice
high rates of evaporation and low rates of precipitation
low rates of evaporation and high rates of precipitation
From which ocean floor destination would a sonar signal take the longest amount of time to return to the receiver?
a trench
an abyssal plain
a continental shelf
a deep-ocean basin
What will happen to a drop of surface seawater as a wave passes?
It will move rapidly forward.
It will be forced down.
It will not move at all
It will rise and fall.
Which ocean temperature zone is the warmest?
littoral zone
thermocline
deep zone
surface zone
A sample of sea water was shown to have a salinity of 35.0 Practical Salinity Units. Based on the graph, at what depth was the sample most likely taken?
The sample was taken about 33 meters below sea level
The sample was taken about 50 meters below sea level.
The sample was taken about 200 meters below sea level.
The sample was taken about 800 meters below sea level.
Which is most likely represented by letter X?
continental slope
oceanic trench
volcanic island
abyssal plain
A graph is being made from data collected to show the factors that affect the height of a surface wave. Which factor would not be included in the graph?
length of time wind blows
temperature of wind
distance wind blows
speed of wind
If Jamie draws a topography map of a section of an ocean, which of these would NOT be true about the map Jamie draws?
The deepest ocean trenches contain the most sea life
There are multiple mountain ranges under the sea.
Islands in the ocean may be the tops of underwater mountains.
Volcanic activity in the oceans produces more pieces of Earth's crust.
If London draws a topography map of the ocean, which of these features would be closest to the coast?
continental slope
continental shelf
ocean trench
continental rise
Select the location where plant life would likely NOT be found.
U
V
W
Y
What is the most likely cause of ocean waves?
temperature differences in the water
density differences in the water
changes in sunlight
surface winds
Mrs. Roberts has a pond without a pump in her backyard, yet she notices small waves in the pond. Each day Roberta measures the amount of wind, the amount of sun and the size of waves in the pond. After analyzing her data Roberta wants to create a graph to show what is causing the waves. Which statement best explains what is causing the waves?
Light from the Sun excites the water molecules, causing waves.
Wind pushes on the surface water molecules, causing waves.
Gravity pulls down on the water molecules, causing waves.
Sound tightens the water molecules, causing waves
If a graph shows the amount of dissolved salts found in an ocean, which salt would have the highest level.
magnesium chloride
sodium chloride
calcium sulfate
potassium sulfate
A scientist wants to replace the letters on the diagram with the features they represent. Which question would BEST help a scientist decide where to place a label for the continental shelf?
Where is the newly formed underwater mountain topography?
Where is the shallowest part of the topography that is near land?
. Where is the deepest point of the topography on the ocean floor?
Where is the sloping topography that is moving toward the ocean floor?
Which of these things will most likely increase the salinity of a region of the ocean?
runoff from a large river
increased precipitation
the thawing of a large iceberg
the evaporation of seawater
Which area on the diagram most likely has water with the highest salinity?
W
X
Y
Z
What symbolizes a rift valley?
2
3
4
5
Which of the following best describes the primary cause of wave formation?
tidal fluctuations
tsunamis
gravitational pull of the moon
wind
