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Earth Science > Unit 4 > Flashcards

Unit 4 Flashcards

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Biology 101 flashcards
1
Q

T or f the organisms that use a water source determine if the water quality is good

A

True

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2
Q

What are 4 chemical tests that you assessed during the water quality lab

A

Dissolved oxygen, ph, nitrate, and phosphate

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3
Q

What might be the source of nitrates and phosphate in a pond or river

A

Run off

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4
Q

Why is high dissolved oxygen good for a pond or lake

A

All organisms need oxygen

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5
Q

Nitrates , phosphates and dissolved oxygen are measured in

A

Ppm

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6
Q

What does ppm stand for?

A

Parts per million

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7
Q

What does ph test for

A

How acidic or basic water is

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8
Q

What is a good ph for water

A

7

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9
Q

What color appeared if the ph sample was 7

A

Green

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10
Q

T or f all natural surface water water sources will have bacteria

A

True

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11
Q

T or f it is ok for drinking water to test positive for coliform bacteria

A

False

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12
Q

What does macro invertebrate mean?

A

Large, with no backbone

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13
Q

Why do macro invertebrates make good indicators of water quality

A

Easy to collect, very sensitive to changes in water quality

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14
Q

Where is the Cahaba located

A

Central Alabama

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15
Q

Where does the cahaba end?

A

Dallas county; bell Selma. It enters the Alabama river

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16
Q

What three factors make the Cahaba unique?

A

Longest free flowing river in the state, more fish per mile than any other river in North America, and it has its own endangered species

17
Q

According to scientists, where did life originate

A

Water

18
Q

Alabama is the ________ state

A

River

19
Q

What is non-source pollution?

A

Pollution from many sources

20
Q

What is siltation? Why is it so harmful to a stream or river?

A

It is small sediments. It chokes the river

21
Q

Why is water called the universal solvent

A

It can dissolve most substances

22
Q

What is a watershed?

A

Where rivers and other bodies of water drain to

23
Q

What type of environment in the watershed is best For the river’s water quality

A

Forest

24
Q

How do scientists determine water quality

A

Chemical analysis and macro invertebrates

25
Q

Why should water quality be the number one environmental issue?

A

Every living thing needs water

26
Q

What watershed is Montgomery in

A

Alabama river

Earth Science (4 decks)

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