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Geography > Hydrosphere Unit 2 > Flashcards

Hydrosphere Unit 2 Flashcards

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1
Q

What does Phosphorus and Triclosan have in common?

A

Both chemicals that contaminate water and can cause problems for sea life and humans

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2
Q

Define Keystone Species

Give 1 example

A

Keystone species are species that play a crucial role in supporting an ecosystem

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3
Q

Define Invasive Species

Give 1 example

A

A type of species that are invading someone else’s habitat

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4
Q

Pros and Cons for Aquaculture

3 reasons for each

A 
Pros:
Stable jobs 
Revitalize towns 
Abundance of fish 
Cons: 
Fish can get diseases 
Fish unhealthier 
Can't reproduce naturally
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5
Q

What is the purpose of Fish Hatcheries and what do they do?

A

The are made to protect the fish from extinction and overfishing
They grow the fish and release them into their natural environment after they reproduce

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6
Q

What kind of species are salmon?

A

Keystone Species

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7
Q

What are some of the causes of salmon habitat loss?

Give three reasons

A

Global warming
Dams
Clearcutting

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8
Q

Why is clearcutting resulting in Salmon habitat loss?

A

Clear cutting removes trees that the salmon use as shade for resting

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9
Q

Why do dams result in salmon habitat loss?

A

They block the salmon from their spawning grounds and creates an obstacle for them

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10
Q

Why does global warming result in salmon habitat loss?

A

The heat warms the water and can result in the salmon dying of heart attacks

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11
Q

Define Clear-Cutting

A

A cheap and fast method of logging that remove trees resulting in bare land

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12
Q

Define spawning

A

The process in which eggs are being deposited directly into the water

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13
Q

How long is a salmon’s journey?

A

8 years

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14
Q

What are some ways that fish farms decrease the salmon population?

A

Spreading diseases to the fish
Easy for parasites to latch on
Up to 1 million fish/container

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15
Q

What can we do to increase salmon population?

A

Get rid of dams
Put more nutrients in the water
Straighten rivers

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16
Q

What do Sea Lice, Sea Lamprey and Zebra Mussels have in common?

A

All invasive species

Species causing problems for the sea life in their environment

17
Q

What specific set of dams can we remove to make a change in the salmon population and why?

A

The lowers shed dams because they block most of the salmon spawning grounds

18
Q

Causes of Blue-Green Algae

Name 3

A

Climate Change
Abundance of nutrients
Phosphorus

19
Q

Name three affects of Blue-Green Algae

A

Contaminates water
Horrible smell
Causes health problems for both fish and humans

20
Q

What can we do to reduce Blue Green Algae?

A

Used phosphors free products
Minimize the amount of nutrients that go into the lakes
Install rain barrels

21
Q

What is the main purpose of rain barrels?

A

To conserve water

22
Q

What are some benefits of having rain barrels?

Name 4

A

Save money
Have extra water
Prevents risk of basement flooding
Cleaner water (lime and calcium free)

23
Q

Define Wet-Weather Flow?

A

Water collected from rain, rooftops and driveways

24
Q

Name three reasons why water is so precious

A

Everything needs water to survive
We have a limited amount of freshwater available
We have the same water since the beginning of time

25
Q

Why do we have a limited supply of freshwater available to us?

A

They are trapped in ice caps, glaciers, snow, the soil and atmosphere

26
Q

Water is always in __________

A

Motion

27
Q

How much of the worlds freshwater does Canada have and where can it be found?

A

20% and in the Great Lakes

28
Q

What is the amount of usable water that Canadians have?

A

7%

29
Q

Where does more than 50% of Canada’s river flow into?

A

The Arctic

30
Q

How much of the world total wetland does Canada have?

A

25% of wetlands

31
Q

How many people in the US and Canada depend on water from the Great Lakes watershed?

A

35 Million people

32
Q

How many Canadians live in the Great Lakes watershed?

A

1/3 of Canada’s population

33
Q

How many great lakes are there in Canada

A 
5 (HOMES)
Huron 
Ontario 
Michigan 
Erie 
Superior
34
Q

What is the greatest cause for water pollution?

A

Cigarette butts

35
Q

What harmful chemicals are belugas exposed to when looking at their autopsies?

A

Benzo(a)pyrene

36
Q

What effect do Benzo(a)pyrene have on the whales?

A

Alter genes
Weaken immune system
Decrease reproduction

37
Q

What is the Beluga Whales Cancer rate and ratio?

A

25% and 1 out of 4 belugas die of cancer

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