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Science Year 8 > Science Strand 1 Test > Flashcards

Science Strand 1 Test Flashcards

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Biology 101 flashcards
1
Q

What are all living things classified in

A

5 main groups called kingdoms,usually grouped based on characteristics

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2
Q

What are the 5 kingdoms called

A

Plant kingdom
Animal kingdom
Fungi kingdom
Bacteria kingdom
Protoctists

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3
Q

What is an intvertebrate

A

Animals without a backbone

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4
Q

Name one example of an invertebrate

A

Snakes

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5
Q

What is a vertebrate

A

Animals with a backbone

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6
Q

Name one example of a vertebrate

A

Humans

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7
Q

Name the classification system in order from biggest to smallest group

A

Kingdom
Phylum
Class
Order
Family
Genus
Species

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8
Q

What do animals fight for

A

Territory and mated

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9
Q

Why do animals fight for territory

A

It is vital for food and reproducing

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10
Q

Why do animals fight for mates

A

Males will often fight with each other to mate with a female

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11
Q

What territory do animals fight for

A

Nests,places to raise and feed their young

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12
Q

What territory do plants fight for

A

Space for leaves and roots to grow

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13
Q

Meaning of adaptation

A

Adaptations are feature or behaviours which enable organisms to survive

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14
Q

How to plants cope with seasons

A

-grow rapidly when the weather is wet or warm
-lose leaves during winter
-when trees breakdown they reuse nutrients to help the new plant grow
-fallen leaves provide a layer of warmth

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15
Q

How do animals cope with seasons

A

-hibernation
-migration
-grow thicker fur
-change fur colour

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16
Q

What is the meaning of migration

A

To move somewhere warmer wetter or for more food

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17
Q

Meaning of variation

A

-the difference that occurs both between different species and within the same species

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18
Q

What are the two types of variation

A

-genetic variation
-environmental variation

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19
Q

What is genetic variation

A

The characteristics which you inherit from your parents

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20
Q

What is environmental variation

A

The environment in which you live in

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21
Q

Name an example of genetic variation

A

-hair colour
-eye colour
-skin colour

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22
Q

Name an example of environmental variation

A

Clothes
Makeup
Skin texture
Scars

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23
Q

Name an example of both genetic and environmental variation

A

Jaws/teeth
Skin colour
Culture

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24
Q

meaning of discontinuous variation

A

A whole number and nothing in between and no other possibilities

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25
Q

What type of graph do you plot for discontinuous data

A

Bar chart

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26
Q

Meaning of continuous variation

A

Data could be anything including decimals

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27
Q

What type of graph will you display continuous data in

A

A line graph or histogram

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28
Q

Meaning of survival of the fittest

A

The ability to survive in their environment,well adapted for the environment

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29
Q

Meaning of natural selection

A

-Mutations
-competition
-survivors passing on their genes to the next generations

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30
Q

Meaning of speed

A

How fast something travels in a particular time

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31
Q

How to figure out the average speed

A

Distance/time

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32
Q

Formula for distance

A

Speed*time

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33
Q

Formula for distance

A

Speed*time

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34
Q

Formula for speed

A

Distance/time

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35
Q

Formula for time

A

Distance/time

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36
Q

Formula for time

A

Distance/speed

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37
Q

What does the x-axis represent in a distance time graph

A

The time

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38
Q

What does the y-axis represent in a distance time graph

A

The distance

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39
Q

What does a horizontal line represent on a distance time graph

A

the object is at rest

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40
Q

What does a horizontal line represent on a distance time graph

A

the object is at rest

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41
Q

What does the line at an angle represent on a distance time graph

A

The object us moving

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42
Q

What does the line at an angle represent on a distance time graph

A

The object us moving

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43
Q

What does the gradient of the line represent

A

A constant speed

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44
Q

What does the steepness of the line represent

A

The steeper the line,the faster the object is moving

45
Q

How do you calculate the gradient

A

Changing in x / changing in y
Or
Rise / run

46
Q

What does a ticker timer do

A

A ticker timer uses the mains energy supple and does 50 ticks every second onto a piece of ticker tape

47
Q

How much time does 1 tick take

A

1/50th a second = 1 tick

48
Q

How to find the total distance travelled by ticks

A

Found by adding the amount of ticks and adding up the time

49
Q

How can you tell if an object is accelerating from ticks

A

The ticks slowly spread out as more distance is covered in a shorter time

50
Q

Metal+water =

A

Metal hydroxide+hydrogen

51
Q

What are the group 1 metals

A

Lithium,sodium,potassium,rubidium and caesium

52
Q

What happens when lithium reacts with water

A

Dissolves,gives off a gas and moves in a circular motion in the water

53
Q

What happens when sodium reacts with water

A

Dissolves,moves in a spherical motion in the water,very effective

54
Q

Potassium reacting with water

A

Pops,explodes,smokes,highly effective reaction

55
Q

Is carbon a heat conductor

A

Yes

56
Q

Is zinc a heat conductor

A

Yes

57
Q

Is iron a heat conductor

A

Yes

58
Q

Is sulphur a heat conductor

A

No

59
Q

Is nickel a heat conductor

A

Yes

60
Q

Is copper a heat conductor

A

Yes

61
Q

Is carbon an electrical conductor

A

Yes

62
Q

Is zinc an electrical conductor

A

Yes

63
Q

Is iron an electrical conductor

A

Yes

64
Q

Is sulphur an electrical conductor

A

No

65
Q

Is nickel an electrical conductor

A

Yes

66
Q

Is copper an electrical conductor

A

Yes

67
Q

Is carbon malleable

A

No

68
Q

Is zinc malleable

A

Yes

69
Q

Is iron malleable

A

No

70
Q

Is sulphur malleable

A

No

71
Q

Is nickel malleable

A

Yes

72
Q

Is copper malleable

A

Yes

73
Q

What metals are not magnetic

A

Carbon,zinc,sulphur,nickel,copper

74
Q

What metals are magnetic

A

Iron

75
Q

Which are metals

A

Zinc,iron,nickel,copper

76
Q

Which are non metals

A

Carbon and sulphur

77
Q

Why do metals and non metals react to oxygen

A

Oxygen is a reactive gas in the air

78
Q

Magnesium+oxygen=

A

Magnesium oxide

79
Q

Are metal oxides acidic?

A

Yes

80
Q

Sulphur+oxygen

A

Sulphur dioxide

81
Q

Does calcium react more to water or magnesium

A

Water

82
Q

Does calcium or magnesium react more to water

A

Calcium

83
Q

Are group one or group 2 metals more reactive

A

Group 1 metals as group 2 metals are less reactive

84
Q

Calcium+water=

A

Calcium hydroxide+hydrogen

85
Q

What is a negative way of metals reacting with acids

A

Corrosion on buildings

86
Q

What is a positive way of metals reacting with acids

A

Etching or art

87
Q

Metal+acid=

A

Salt+hydrogen

88
Q

What is neutral

A

PH7
-salts are neutral

89
Q

What is the reaction of zinc with water

A

Bubbles and emits a gas

90
Q

What is the reaction of copper with water

A

Nothing

91
Q

What is the reaction of iron with water

A

Bubbles,turns yellow,quite reactive

92
Q

What is the reaction of magnesium with water

A

Dissolves as soon as it reaches the hydraulic acid

93
Q

Zinc+hydrochloric acid

A

Zinc chloride+hydrogen

94
Q

Magnesium+copper nitrate=

A

Magnesium nitrate+copper

95
Q

Calcium+iron sulphate

A

Calcium sulfate+iron

96
Q

Aluminium+iron oxide

A

Aluminium oxide+iron

97
Q

Oxidisation

A

Gain of oxygen

98
Q

Reduction

A

Loss of oxygen

99
Q

How does aluminium become oxidised

A

Gain of oxygen

100
Q

How does aluminium become oxidised

A

Gain of oxygen

101
Q

How does iron oxide become iron

A

Iron oxide looses oxygen

102
Q

Oxidising agent

A

Causes another substance to be oxidised

103
Q

Reducing agent

A

Causes another substance to be reduced

104
Q

Reducing agent

A

Causes another substance to be reduced

105
Q

Iron+oxygen

A

Iron oxide

106
Q

Silver+oxygen

A

Silver oxide

107
Q

Calcium+water

A

Calcium hydroxide+hydrogen

108
Q

Gold+chlorine

A

Gold chloride

Science Year 8 (1 decks)

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