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WorksheetsGrade 8 Water Review
Total questions: 45
Worksheet time: 26mins
Which of the following represents the percentage of the world's water that is freshwater?
50%
23%
97%
3%
Which of the following pairs would represent the majority of freshwater on Earth?
icecaps and groundwater
lakes and streams
groundwater and streams
ice and lakes
Which of the following is NOT true of glaciers?
They have a great affect on the land around them.
They don't affect the land around them.
They contain vast amounts of fresh water.
They are melting and may eventually disappear.
Glaciers affect the water cycle in many direct and indirect ways. Their DIRECT influence is...
they speed up evaporation as they melt
decrease the amount of accumulation
slow down the speed at which water travels through the cycle
prevent groundwater from evaporating
If accumulation exceeds melting in a glacier then it is considered a ________________ glacier.
advancing
retreating
stationary
overflowing
What is erosion?
when sediment is deposited.
when sediment is picked up and moved.
when sediment mixes with the water.
when the sediment mixes with the soil.
Where is most of Earth’s water located?
glaciers
lakes
oceans
rivers
Approximately what percentage of the Earth's land area is covered in glaciers?
5%
1%
66%
10%
What is the process of building up more snow over time called?
accumulation
glacial build
plucking
summer melt
What causes glaciers to move?
There is a large amount of pressure on the lower layers as the glacier is very heavy. This causes the bottom layers to become more flexible.
They break apart and tumble down.
They become completely liquid in the summer
They are rivers
Which of the following is considered precipitation?
Rain
Snow
Hail
Sleet
Which of the following matches this definition?
A large moving mass of ice and snow
Glacier
Ice Cap
Valley Glacier
Continental Glacier
Which of the following matches this definition?
A large dome shaped glacier that flows out from it's center
Glacier
Ice Cap
Valley Glacier
Continental Glacier
Which of the following matches this definition?
A crack or fissure in the ice
Crevasse
Pack Ice
Ice Fall
Striation
Which of the following matches this definition?
Parallel scratches in rock, formed when a glacier pushes boulders across rock
Crevasse
Pack Ice
Ice Fall
Striation
Water that fills the cracks and spaces in underground soil and rock layers is
salt water
rainwater
groundwater
water vapor
Which of the following is a process that occurs in the water cycle?
condensation
evaporation
precipitation
all of the above
We can prevent water pollution by:
Reduce the use of plastic
Properly dispose of chemicals
All of the above
Clean up after your animals
The main contributors of acid rain are
Sulphur oxides and carbon oxides
Nitrogen oxides and Sulphur oxides
carbon dioxide and carbon monoxide
nitrogen oxides and carbon oxides
Which of the following is NOT a reason to build a dam?
Irrigation
Preservation of Habitats
Hydro-electricity generation
Flood Control
What do all waves transfer?
Matter
Heat
Electricity
Energy
_______are daily changes in ocean water.
Waters
Tides
Colors
Earths
The Gulf Stream carries warm water to the North Atlantic Ocean, which contributes to
a mild climate for the British Isles.
a harsh winter in the British Isles.
a cold-water surface current that flows to the British Isles.
a warm-water surface current that flows along the coast of California.
There are _____ oceans in the world
4
6
5
9
Smaller bodies of salt water are called
seas
lakes
oceans
rivers
Winds blowing across the surface of the oceans and seas cause them to move in ripples called ________
tides
waves
current
motion
Where is the most dramatic tidal difference in the world?
Bay of Fundy
Hudson's Bay
Challenger Deep
Gulf of Mexico
How many drainage basins does Canada have?
1
3
5
7
Check ALL of Canada's major drainage basins.
Atlantic Ocean
Pacific Ocean
Gulf of Mexico
Arctic Ocean
Hudson's Bay
What is a continental divide?
The lowest point on a continent
The major river through a continent
The highest point through a continent
The mountains
Wetlands store flood waters. How is this beneficial? Choose the best answer.
Its not really beneficial because this may flood peoples homes.
It releases the water is increments which will really increase the wildlife in that area.
It releases the water in increments ( a little at a time) which slows the water down thus slowing erosion.
Its really not beneficial because this will flood the habitats of the wildlife living there.
Streams, rivers, and lakes are examples of...
surface water
ground water
aquifers
water tables
A substance has a low permeability when...
water can flow through easily
water CAN'T Flow through easily
All surface water begins as groundwater that moves upwards.
All surface water is saltwater, which becomes fresh upon percolating into soil.
How does building on floodplains increase the chance of flooding?
Cement and other materials used for buildings are impermeable
It decreases the air quality
More people walking around makes the land sink
An increase in buildings boosts the economy
Which of the following should not be present (in any amount) for water to be considered potable?
Minerals
Toxins
Bacteria
pH
Which technique for converting saltwater to freshwater requires a filter with small holes in it?
Evaporation
Distillation
Distillation and evaporation
Reverse osmosis
Which of the following is an example of a situation where an organism was not able to adapt to its environment?
Pond salamanders die when the weather changes and the water disappears.
Star fish have suction cup-like bottoms to cling onto rocks in intertidal zones.
Sewage adds nitrogen to water that makes micro-organisms multiply and provides a lot of food for the fish.
None of the above.
Which of the following is a positive impact that humans have on the water supply?
Fertilizer runs off fields and enters rivers.
Oil spills from ships.
Sewage (human waste) is dumped.
None of the above.
Which of the following is an example of an adaptation an organism has made to its environment?
Star fish have suction cup-like bottoms to cling onto rocks in intertidal zones.
Pond salamanders die when the weather changes and the water disappears.
Sewage adds nitrogen to water that makes micro-organisms multiply and suffocate the fish.
None of the above.
Many different species that live in or near aquatic environments can be used as Bioindicator species. The Whitefish Lake First Nations people are working with scientists to study the cause and effects of outbreaks of 'botulism' in this species
Ducks
Turtles
Frogs
Toads
Whales are able to devour large amounts of plankton because they can filter them through this adaptation
Gills
Blubber
Baileen
Barnacles
Too many nutrients in an aquatic ecosystem can cause populations of algae to increase rapidly. Although this is good for the algae, it is not so good for other organisms because the algae
takes up too much space
Takes away all the nutrients
Reduce the oxygen supply
Makes the water smell bad
