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Science 9 UNIT C Environmental Chemistry > concept 3 > Flashcards

concept 3 Flashcards

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1
Q

what is aerobic?

A

processes or places that contain or require oxygen

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2
Q

what is anaerobic?

A

processes of place that do not contain or require oxygen

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3
Q

what is biodegradation?

A

living things break materials down

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4
Q

what is biomagnification?

A

looking at an element or a compound (pollutant) making its way up the food chain

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5
Q

what is dilution?

A

mixing a substance with air or water to reduce the concentration of the substance

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6
Q

what is dispersion?

A

a substance scattering away from its source

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7
Q

what is groundwater?

A

the water that fills up cracks and spaces in the ground

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8
Q

what is leachate?

A

a liquid that dissolves into the soil then carries substances as it passes through it

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9
Q

what is MSDS?

A

Material Safety Data Sheet

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10
Q

what does “permeable” mean?

A

a substance that liquids can flow through

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11
Q

what is photolysis?

A

when substances degrade from exposure to sunlight

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12
Q

what is phytoremediation?

A

a process where plants are used to remove or degrade hazardous materials

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13
Q

what is the water table?

A

the surface of the groundwater zone

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14
Q

what is WHMIS?

A

Workplace Hazardous Materials Information System

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15
Q

what is the main purpose of the ozone layer?

A

protects the earth from the suns radiation and UV light

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16
Q

what is an ozone molecule made of?

A

three oxygen atoms blended together

17
Q

what compound is made culprit behind ozone layer depletion?

A

CFC’s (chlororfluorocarbons)

18
Q

where are the thinnest patches in the ozone layer?

A

near the north and south poles

19
Q

what is the greenhouse effect?

A

traps heat on the earth’s surface (we only need a little, not a lot)

20
Q

why is the temperature on earth more stable than on the moon?

A

because Earth has an atmosphere protecting us from extreme heat during the day and extreme cold during the night

21
Q

what are the 4 most common greenhouse gases?

A

carbon dioxide, dinitrogen monoxide, methane, water vapor

22
Q

what is carbon monoxide and why is it bad?

A

it blocks oxygen from entering the bloodstream. it can come from furnaces and cars

23
Q

what is a carbon footprint?

A

it is the amount of carbon you’ve used in a certain amount of time

24
Q

what factors contribute to your carbon footprint? (6)

A

how much electricity you use, how much they drive, water use, flights are taken, food consumed, how much they spend on clothing and other goods.

Science 9 UNIT C Environmental Chemistry (3 decks)

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