WorksheetsUnit 1: Hydrosphere Review
Total questions: 30
Worksheet time: 11mins
A water molecule is made up of:
two oxygen atoms bonded to a hydrogen atom.
two hydrogen atoms bonded to an oxygen atom.
two hydrogen atoms bonded together.
two oxygen atoms bonded together.
Tightness across the surface of water that is caused by polar molecules pulling on each other is called
condensation
polar action
capillary action
surface tension
Water is often called the universal solvent because
it can cling to the fibers of paper and cloth.
it dissolves so many substances.
it exists in all three states on Earth.
its frozen form floats on its liquid form.
Water is the only substance on Earth that
freezes at very low temperatures.
commonly exists in all of its different states.
exists in the liquid state.
boils at very high temperatures.
The process by which a gas changes into a liquid is called
evaporation.
condensation.
melting.
freezing.
Plants use water to
keep predators away.
release as a waste product.
make their own food.
attract pollinators.
Approximately what percentage of Earth’s water is fresh water?
30%
71%
97%
3%
As water moves slowly through a wetland, some waste materials settle out, some wastes are absorbed by plants, and silt and mud is trapped by plant roots. In this way, wetlands act as natural
artesian wells.
habitats.
tributaries.
filters.
Water that fills the cracks and spaces in underground soil and rock layers is called
groundwater.
water vapor.
rainwater.
salt water.
Water that falls to Earth as rain, snow, sleet, or hail is called
precipitation.
perspiration.
transpiration.
evaporation.
The total amount of water on Earth
is decreasing.
is increasing.
is fairly constant.
is polluted.
A river system is made up of a river and its
divides.
flood plains.
tributaries.
sediments.
The water in ponds and lakes is
moving.
still.
high in salt.
have a low pH.
A lake that stores water for human use is called a(n)
reserve.
oxbow lake.
dam.
reservoir.
Wetlands help control flooding by
quickly releasing water.
collecting water behind dams.
providing natural water filtration.
absorbing runoff from heavy rains.
Materials that allow water to pass through them easily are
unsaturated
permeable
saturated
impermeable
An aquifer is a(n)
place where groundwater bubbles or flows out of cracks in the rock.
type of hot spring from which the water periodically erupts.
underground layer of rock or sediment that holds water.
well in which water rises because of pressure.
An object that is more dense than the fluid in which it is immersed will
neither rise nor sink.
sink.
rise.
sink at first, than rise slowly.
Using less water so that it will not be used up is called
desalination.
distribution.
irrigation.
conservation.
The process of obtaining fresh water from salt water is called
coagulation.
filtration.
evaporation.
desalination.
The pH of water is a measure of its
cloudiness.
color.
temperature.
acidity.
In many communities, a network of pipes called sanitary sewers carries sewage away to
irrigation systems.
desalination plants.
wastewater treatment plants.
hydroelectric power plants.
Many homes that are not connected to public sanitary sewers might dispose of sewage using a(n)
well.
aquifer.
reservoir.
septic system.
Specific sources of pollution that can be identified are called
nonpoint sources.
sewage.
runoff.
point sources.
Which of the following is NOT a major source of freshwater pollution?
industrial waste.
wetlands.
agricultural chemicals.
human and animal wastes.
Pesticides are most likely to be found in runoff from
farm fields.
roads.
schools.
factories.
A pollutant often found in road runoff is
oil.
pesticides.
industrial chemicals.
sewage.
The streams and small rivers that feed into a main river are called
wetlands.
bogs.
tributaries.
flood plain.
Which of the following is NOT a type of freshwater wetland?
marsh
swamp
lake
bog
Because water consists of polar molecules,
most of it is found at the North and South Poles.
it falls as sleet or snow when temperatures are cold.
it can be attracted using a magnet.
water molecules tend to stick together.
