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quiz ch 5.1-.5 ess > ess > Flashcards

ess Flashcards

1
Q

soil structure and properties

A

anchor roots, supply water, protect against temp

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2
Q

soil conditions physical that restrict plant growth

A

barriers- v compact soil
no cracks
low 02 levels
temp too extreme

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3
Q

soil conditions chemical that restrict plant growth

A

low nutrient
high aluminum conc. and low pH
phytotocox chen in anaerobic soil ( meta; pr insects )

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4
Q

spil types

A

agricultural potential depends on porosity and permeability of soil surface
- pore space controls water drainage

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5
Q

small peds have mor or less surface area

A

more

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6
Q

sandy soil

A

low primary pro. can’t hold water, few nutrients

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7
Q

clay soil

A

very low primary prod., poor creation, low water inf.

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8
Q

loam

A

high primary prod., med. infiltration, can hold water, nutrients good, aeration, easy to work w

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9
Q

primary productivity of soil

A

mineral content, air pscaes, drainage, water holding ability, living things, potential to hold organic matter

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10
Q

pH lab instruments

A

feral type pipett
soil core tube
universa; indicator solution
soil typ schart

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11
Q

sustain. of terrestrial food pro. sys. is influenced by :

A

socio-political, eco$, and eco factor

  • consumers
  • food is inequitably available =/ land suited for p.p= unevenly distributed= conflict and conersns
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12
Q

what % of food pro. doesn’t make it to the plate ?

A

30-50
- 1.2-2 billion tons of waste
LEDC- farmer end
MEDC- post consumer waste end

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13
Q

how many b. of h20 is wasted?

A

550 billion

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14
Q

LEDC is less likely to be ? when relations to food loss

A

mechanized, les info structure, may not have the right place to store the food

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15
Q

MEDC looses food how?

A

pos consuming bc of aesthetic, best buy dates, buy in bulk

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16
Q

what are some links and influencing factors between social sys. and food pro sys ?

A

EVS infuclences f.p.s for a society

  • socio economic
  • cultural
  • eco, eco $
  • political
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17
Q

socio-economic ex:

A

farming ofr porfit, substinance, local consumption, export quantity, commercial

18
Q

shifting cultivation aka slash and burn

A
  • 50 years before go back to the same plot
  • ex: amazon rainforest
  • small pop., small areas cleared by far of small community
  • traditions/ rituals
  • remembering hist
  • animist- everything has soul
  • ecocentric approach
19
Q

wet rice eco

A
  • SE asia
  • terracing
  • intensive labour
  • high labour, low tech, high pop dens.
  • high in clay
20
Q

terracing

A

slope is divided into flat terraces or steps w/ bunds ( wall or raised evens) at edges fadeout of stones t or trap water

21
Q

socio- cultural factors & food pro

A
  • what people want and believe
  • most europ e wants organic
  • concern for animal welfare
  • edu levels - faming tech
  • land ownership/ immigration
22
Q

agribusiness

A

shift from production of food for people needs tor production for commercial profit and profitable return
- maximize prod. and $ t complete in the global market

23
Q

main characteristics of agribusiness

A
  • large scale monoculture
  • use of fertilizers and pesticides
  • mechanized ploughing and harvesting
  • sports of food production for mass markets
  • gmo
  • loss of bio d = native habitats been cleared
24
Q

agriculture in ledc suffer from low levels of

A

tech
lack of capital
uses high level of labor

25
Q

farming is a - system

A

open

26
Q

Which one of the following terrestrial food production systems uses the highest amounts of fertilizers?

A

north american cereal farming

27
Q

Which one of the following responses indicates which agricultural system(s) produce significant levels of atmospheric pollutants?

A

Both intensive beef production and slash and burn agriculture

28
Q

Which one of the following is an input that plays the most crucial role in subsistence rice farming in South East Asia?

A

Water for irrigation

29
Q

Which of the following terrestrial food production systems may be regarded as the most sustainable??

A

Maasai tribal livestock cultivation.

30
Q

Which of the following practises in industrialised terrestrial food production systems contributes the most to global climate change?

A

Mechanisation increases fossil fuel use and emits gases such as carbon dioxide or methane.

31
Q

A ______________ farm will produce only that amount of yield that is sufficient to feed a family.

A

subsistence

32
Q

A _______________ farm will cultivate a single crop for monetary profit.

A

commercial

33
Q

What is the term used to describe the successive planting of different crops on the same land to maintain soil productivity?

A

Crop rotation

34
Q

Salinization is caused by the movement of water in soil.

A

upwards

35
Q

Soil may be compared to an open system as it exchanges both matter and energy with the surroundings. Choose the sequence which lists soil storages.

A

Water, air, organic matter, organisms, nutrients and minerals

36
Q

Which soil type has got the best water holding capacity?

A

clay

37
Q

Which of the soil types below has the highest levels of primary productivity?

A

loam

38
Q

Among the soil types below, which one can retain the smallest amounts of nutrients and minerals?

A

sand

39
Q

more draingae=

A

bigger particles, more permeability

40
Q

Which of the following soil types is very hard to work in hot and dry conditions?

A

clay

quiz ch 5.1-.5 ess (1 decks)

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