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Year 9 science > semester 1 exam revision > Flashcards

semester 1 exam revision Flashcards

1
Q

biotic

A

living organisims eg.Plants/animals

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2
Q

Abiotic

A

Physical rather than biological e.g. light temperature

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3
Q

Ecosystem

A

A biological community of organisms e.g. pond

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4
Q

Habitat

A

The natural home or environment e.g. desert

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5
Q

Community

A

A group of people living in the same place

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6
Q

Producer

A

Produces are organisms that can make their own and energy through biochemical processes which are processes in living things that involve chemical reactions

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7
Q

Consumer

A

Do use of an object of food

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8
Q

Decomposer

A

Organisms that breakdown dead organisms

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9
Q

Photosynthesis

A

The process which plants use sunlight to change the size nutrition

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10
Q

Competition

A

Where to organisms want the same resource such as food on nestings site both are harmed e.g. two kangaroos wanting grass the same

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11
Q

Sim biosis

A

Interaction between two different organisms living in close physical association

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12
Q

Parasitism

A

The practice of living as a parasite on or with another animal or organism

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13
Q

Mutualism

A

A relationship in which both species benefit

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14
Q

Communalism

A

And association between two organisms and which one benefits and the other gets none

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15
Q

Autotroph

A

An organism that is able to form nutritional organic substance from in organic substances such as carbon dioxide e.g. plants

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16
Q

Heteroph

A

An organism that derives its nutritional requirements from complex organic substances

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17
Q

Ecological niche

A

Much of a species to have a specific environmental condition

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18
Q

Predator prey

A

And interaction between two different organisms of unlike spaces in which one of them acts as a predator

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19
Q

Endo

A

Within

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20
Q

Actor

A

Outside

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21
Q

Examples of abiotic factors

A

Temperature light and water

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22
Q

Examples of the biotic factors

A

Animals birds plants fungi and other similar organisms

23
Q

Cellular respiration

A

A set of metabolic reactions and processes that place in the cell of an organism to convert chemical energy from oxygen molecules or nutrition into power

24
Q

Formula for aerobic cellular respiration

A

Fuel+oxygen = co2 + h20

C6h12o6 + 6o2 = 6co2 + 6h2o + energy(atp)

25
Q

Formula for an Anerobic respiration

A

Fuel = lactic acid+ energy

26
Q

Glucosesis

A

Is the metabolic or mathematical pathway that converts glucose into prior to a sequence of 10 enzymes catalyse reactions

27
Q

Herbivore

A

Only eat plants

28
Q

Carnivores

A

Only eat meat

29
Q

What is a motorcycle

A

Plants (consumer) = herbivor(1st level consumer) = carnivore(2nd consumer) = decomposer

30
Q

What is biomagnification

A

Biomagnification is a process where the concentration of a toxin increases as it moves through a food web

31
Q

Example of biomagnification

A

Plaktin(1ppm) = anemone(2ppm) = lobster(8ppm) = human(50ppm)

32
Q

What is an energy pyramid

A

energy is passed along the food chain from trophic level to trophic level only 10% of its energy is passed along

33
Q

And example of an energy pyramid

A

Plants(100 units) = herbivor(10 units) = carnivore(1 unit)

34
Q

What is biomass

A

The weight of all living things

35
Q

What is an edge to spaces

A

And introduced species is one that has been released into an exit ecosystem where it does not naturally occur at food web is delicately as delicate especially with new spaces

36
Q

What is carrying capacity

A

Maximum population in an ecosystem

37
Q

What is exponential growth

A

Population quickly rising at an increasing rate

38
Q

What is a biosphere

A

The strip around the earth that supports life

39
Q

What is a food web

A

I web of consumers and a graphical representation of what it’s white and ecological

40
Q

What is the food chain

A

A food chain is a lane network of links in a food web starting from reduce produce organise an ending and X prejudice basis

41
Q

Formula for photosynthesis

A

6co2 + 12h2o = c6h12o6 +oxygen + water

42
Q

Atmosphere what is it

A

A blanket of gases that surround the earth to the height of approximately 445 km mostly nitrogen/oxygen which supports life on earth

43
Q

What is the crust

A

What is the crustThe crust includes landforms rocks and soil mostly solid rock rigid and strong it varies in thickness

44
Q

What is a hydrosphere

A

Water on or at the surface of the earth including ocean lakes/rivers/rain/mist

45
Q

What is the mantle

A

The mantle is mostly solid rock temperature between 500°C and 2000°C is about 9000 2900 km thick

46
Q

What is the outer core

A

Molten iron and eat and nickel temperature is between 4000°C and 6000°C about 2300 thick

47
Q

What is the inner core

A

Mostly I am sold solid to the extreme pressure temperature about 7000°C and 1200 km thick

48
Q

What’s the theory of plate tectonic’s

A

The theory states that the earths solid outer crust the lesser lithosphere is separated into plates that move over earth

49
Q

What is continental drift

A

Continental drift is the gradual movement of the continents across the earth surface through geological time

50
Q

Divergent

A

Divide

51
Q

Convergent

A

Collide

52
Q

Transform

A

Slide

53
Q

What can happen happen at convergent plate boundaries

A

Subduction or collision

54
Q

What can happen at divergent plate boundaries

A

Divide

Year 9 science (2 decks)

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