WorksheetsHydrosphere
Total questions: 25
Worksheet time: 13mins
Which describes the total amount of saltwater on Earth?
1%
3%
75%
97%
Which best describes the amount of usable freshwater on Earth?
1%
3%
75%
97%
Water from aquifer is cleaner compared to water from other sources. Why?
it becomes clean when fresh and saltwater meet
it comes directly from precipitation
it rises to the surface near the ocean
it is filtered by the rocks and soil
Which statement best describes a river basin?
the land drained by a river and its tributaries
the land formed when rivers create estuaries
the land at the mouth of the river
the land formed after flooding
Urban sprawl is the rapid expansion of cities and towns. How does it affect water availability?
It lessens the demand for water
It deepens the wells that provide more water supply
It changes the shape of the land which changes the watersheds too
It builds neighborhoods that increases water reservoirs
Aquifer pollution is more dangerous than pollution in other bodies of water. Why is that so?
It takes a long time for water to clean itself since it is moving slowly in an aquifer.
It is difficult to see chemicals in aquifers since they are invisible compared to visible chemicals in larger bodies of water.
It affects the organisms living in bigger bodies of water as water leaves quickly in aquifers.
It contains chemicals with bad odor that makes the flavor of water bad too.
Which statement correctly compares river basins and watersheds?
There are many watersheds that drain into a river basin.
There are many river basins that drain into a watershed.
Both river basin and watershed are the same.
Only a few areas are drained by river basins while others are drained by watersheds.
Among the freshwater given, which is the primary source in the hydrosphere?
groundwater
lakes
glaciers and ice caps
ocean
Which characteristics do a rock must possess in order for it to become an aquifer?
porous yet impermeable
non-porous and impermeable
porous and permeable
non-porous yet permeable
Which of the following could result in the drying up of a river basin?
increased evaporation and increased precipitation
decreased evaporation and increased precipitation
increased evaporation and decreased precipitation
decreased evaporation and decreased precipitation
Approximately, Earth is covered with ____% of water.
25
50
70
90
Pure water can be obtained from ocean water through distillation. But why is not often done to supply freshwater to places where it is lacking?
because it is an expensive process
because its technology is not fully developed yet
because it cannot produce enough amount of freshwater
because it involves the use of dangerous chemicals which may harm people
What happens to life forms living in an estuary if the nutrients in it increases?
life forms increase
life forms decrease
life forms remain the same
life forms neither increase nor decrease
What makes life possible in deep ocean floor?
cold water temperatures
high water pressure
low light availablity
hydrothermal vents
In which location should fishermen go in order to catch a greater number of fish?
at the shoreline
intertidal zone
in an upwelling
deep ocean floor
If you want to explore the deep ocean zone, what kind of submersible vehicle should you use to do it safely?
a submersible vehicle that is large and heavy
a submersible vehicle that can withstand high pressure
a submersible vehicle that is fancy yet light
a submersible vehicle that can withstand high salinity
Animals living underwater are able to survive because of dissolved oxygen in water. Which is the main source of dissolved oxygen in the ocean?
decaying organisms
underwater earthquakes
plants and phytoplanktons
aquatic animals living in the surface of the water
The most abundant dissolved gases in the ocean water are nitrogen and _________.
oxygen
carbon dioxide
methane
sulfide
Which organism serves as the foundation of sea life?
dolphin
phytoplankton
zooplankton
whale
The productivity in a marine ecosystem is limited due to the availability of ______ and _______.
light and nutrients
light and salinity
light and chemosynthetic organisms
photosynthetic organisms and fresh water
What happens to the amount of dissolved gases when the salinity of water increases?
It increases.
It decreases.
It remains the same.
It neither increases nor decreases.
As the ocean water temperature decreases, the amount of oxygen _____.
decreases
increases
remains the same
neither decreases nor increases
If you are to conduct a deep ocean research, which will benefit the economy the most?
hydropower
oil resources
new habitats
medicine
Which characteristic of the rock is suitable to for a well location?
saturated
unsaturated
permeable
impermeable
What could probably happen to a water table if a pumping well operates for a long period of time during drought?
It will fall.
It will rise.
It will remain the same.
It will rise, then fall afterwards.
