NEW
Font size
S
M
L
XL
WorksheetsA Fresh Future
Total questions: 15
Worksheet time: 8mins
Name
Class
Date
1.
Of all the freshwater on Earth, what percent of it is actually accessible to us on the surface?
a)
less than one percent
b)
about three percent
c)
about thirty percent
d)
about fifty percent
2.
A group of parts that work together as a whole is called _____
a)
conservation
b)
a zone
c)
a niche
d)
a system
3.
Probably the biggest thing that humans do that negatively affects the hydrosphere is _____
a)
overharvesting
b)
polluting
c)
building dams
d)
removing dams
4.
When people use more freshwater than can be replaced it's called _____
a)
overharvesting
b)
farming
c)
distributing
d)
fertilizing
5.
When people put sewage or other waste in the water it's called _____
a)
overharvesting
b)
farming
c)
polluting
d)
dam building
6.
A barrier built to collect or redirect water is called a _____
a)
dam
b)
bridge
c)
tunnel
d)
waterway
7.
Protecting things found in nature is called _____
a)
pollution
b)
conservation
c)
overharvesting
d)
squandering
8.
The Elwha River is located in _____
a)
Olympic National Park in Washington State
b)
Yellowstone National Park in Wyoming
c)
Grand Canyon National Park in Arizona
d)
Yosemite National Park in California
9.
What was built, nearly 100 years ago, that brought a lot of problems to the Elwha River?
a)
a massive factory
b)
a long bridge
c)
a large highway
d)
a giant dam
10.
The Elwha River is home to all 5 species of native _____
a)
Atlantic tuna
b)
Pacific tuna
c)
Pacific salmon
d)
Atlantic salmon
11.
Because the water around the Elwha dam stayed in one place _____
a)
the water got cooler
b)
the water got warmer
c)
the water got dirtier
d)
the water got cleaner
12.
Most fish prefer to lay their eggs in _____
a)
cold water
b)
warm water
c)
hot water
d)
mineral water
13.
Warm water breeds _____
a)
fish
b)
phytoplankton
c)
parasites
d)
salmon
14.
In 2011, some local people decided it was time for _____
a)
the dam to be widened
b)
a new dam to be built
c)
a tunnel to be dug
d)
the dam to come down
15.
Since 1999, how many dams have been torn down across the United States?
a)
about 4 dams
b)
about 43 dams
c)
about 430 dams
d)
about 4300 dams
Reset
