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WorksheetsWater Unit
Total questions: 35
Worksheet time: 18mins
Which indirectly causes ocean and sea waves?
pressure energy
tidal energy
solar energy
sea energy
How will this pie graph change if temperatures on Earth continue to increase?
Less than 2% of the Earth's water will be in the polar ice caps.
Less than 97% of Earth's water will be salt water.
Nearly all water from Earth's polar ice caps will become available freshwater.
Nearly all of Earth's available freshwater will disappear.
Which of the following form the pattern of surface currents on Earth?
the Sun's gravitational pull and Earth's rotation
global winds and the Coriolis effect
high and low tides
the Moon's gravitational pull and Earth's tilt on its axis
Which of the following best explains why surface currents turn in opposite directions above and below the equator?
The temperature of the water above and below the equator is opposite, causing the currents to rotate in opposite directions.
Surface currents are affected by the rotation of Earth, and this is called the Coriolis effect.
Surface currents are affected by the rotation of Earth, and this is called the circular effect.
The density of the water above and below the equator line is opposite, causing the currents to rotate in opposite directions.
Which is most likely represented by letter X?
Oceanic trench
abyssal plain
volcanic island
continental slope
Which correctly orders the reservoirs of Earth's total water from the largest to the smallest portions?
oceans → lakes → ice → rivers → groundwater
groundwater → oceans → lakes → rivers → ice
ice → oceans → lakes → groundwater → rivers
oceans → ice → groundwater → lakes → rivers
Which number identifies the continental shelf?
1
2
3
4
Which ocean temperature zone is the warmest?
surface zone
deep zone
thermocline
littoral zone
Which ocean borders the Georgia coast?
Atlantic Ocean
Pacific Ocean
Arctic Ocean
Southern Ocean
What is the name of this current?
North Equatorial Current
North Atlantic Drift
Gulf Stream Current
Labrador Current
When is seawater the densest?
when salinity is low and its temperature is high
when salinity is high and its temperature is low
when salinity is high and its temperature is high
when salinity is low and its temperature is low
Which does NOT affect deep ocean currents?
density
wind
salinity
temperature
From which ocean floor destination would a sonar signal take the longest amount of time to return to the receiver?
a deep-ocean basin
a trench
a continental shelf
an abyssal plain
Most of Earth's surface is covered by
rocks
ice
water
craters
What is the primary cause of tides on Earth?
the Sun's electromagnetic energy
Earth's magnetic field
the gravitational force of the Moon and Sun
Earth's rotation
Why are oceans a major part of the water cycle?
because the salt water condenses easily to become a gas in the air
because they are large bodies of salt water that fresh water can be evaporated from
because they are large bodies of salt water that easily evaporate salt into the air
because the salt water runs off onto land to fill lakes and streams
Where is most of the Earth's freshwater located?
in rivers and streams
in aquifers
in icecaps and glaciers
in the ocean
How much of Earth's water is salt water?
65%
89%
97%
58%
Which part of the ocean would have the lowest salinity?
in areas near the equator
in areas where there is little rainfall
in areas with the highest temperatures
in areas near melting glaciers
Which process is most responsible for the salt levels of the ocean?
temperature and wave speed
wave size and salinity
salinity and temperature
wave speed and wave size
Lakes, rivers, and oceans are all part of which Earth system?
biosphere
hydrosphere
lithosphere
atmosphere
Aquifers are sources of
freshwater, which is used for drinking, bathing, and watering crops.
silica, which is used to make glass and paper products.
oil, which is drilled from the aquifer and used to power homes.
saltwater, which is pushed through turbines to make energy.
What is the source for most of the water vapor that enters the atmosphere through evaporation?
land
plants
mountains
oceans
Which number identifies a mid-ocean ridge?
5
4
2
3
Surface currents are continual, long-term factors that influence the climate of the Earth. What causes the formation of surface currents?
salinity differences
water temperature
global winds
differences in density
How does temperature affect ocean currents?
Warm water moves fast and will sink. As the water cools down, it slows down and will rise to the surface.
Cold water is dense and will sink. As the water warms up, it becomes less dense and will rise to the surface.
Cold water moves fast and will sink. As the water warms up, it slows down and will rise to the surface.
Warm water is dense and will sink. As the water cools down, it becomes less dense and will rise to the surface.
Ocean currents are produced by
earthquakes on the bottom of the ocean floor
differences in the number of organisms living at different depths.
differences in the temperature of the water at different depths
volcanoes on the bottom of the ocean floor.
If Maria draws a topography map of the ocean, which of these features would be closest to the coast?
Continental shelf
Continental slope
continental rise
ocean trench
Which process is most responsible for the salt levels of the ocean?
precipitation
evaporation
sedimentation
transpiration
Most of the Earth is covered in water. What percentage of this water can humans drink?
1%
20%
10%
5%
How does the Gulf Stream affect the coasts of the United States and England?
The Gulf Stream creates greater temperature extremes.
The Gulf Stream promotes milder temperatures.
The Gulf Stream promotes more upwelling.
The Gulf Stream creates high wave action.
Which of the following best describes the primary cause of wave formation?
wind
tidal fluctuations
tsunamis
gravitational pull of the moon
Which of these things most likely affects the amount of dissolved oxygen and carbon dioxide in a region of the ocean?
the types of life-forms in the water
the temperature of the water
the dissolved nutrients in the water
the salinity of the water
The salts in the ocean get there mainly through
winds blowing sediments into the ocean.
snow melting into the ocean.
rivers carrying sediments into the ocean
rain falling on the ocean.
Freshwater is water that contains little or no salt. Which of the following is least likely to be a source of freshwater?
lakes
glaciers
rivers
oceans
