Final Flashcards

(38 cards)

1
Q

Science

A

a method, or process, used to investigate the
natural world.

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2
Q

Deductive Reasoning

A

is used to solve problems with
“known” parameters.

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3
Q

Inductive Reasoning

A

is used to generate
new information or principles.

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4
Q

Observation

A

data obtained with the five senses
of a single event

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5
Q

Generalization

A

A generalization is a pattern or regularity you discern from a set of similar or related observations

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6
Q

Inference

A

An inference is a reasonable, but tentative consequence or conclusion you deduce from an observation or generalization (or both) combined with your prior knowledge and experience - what you think it all might mean.

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7
Q

Qualitative Observation

A

Descriptive; what something is like

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8
Q

Quantitative Observation

A

Numeric; how many; relates to a quantity

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9
Q

The Scientific Method

A
  1. Observation – an observation is a single perceived event.*
  2. Hypothesis – a hypothesis is a proposition that might be true.
    a. A hypothesis comes from an educated guess about the
    pattern or process (generalizations) underlying potentially
    related observations.
    b. Alternate hypotheses – are other possible, but less likely
    explanations for observed phenomenon.
    c. All versions of the scientific method involve forming
    hypotheses.
  3. Predictions – General consequences that
    might be observed if a hypothesis is
    correct. Frequently more specific than a
    hypothesis.
  4. Testing – The use of experiments to
    evaluate predictions and thus accept or
    reject the underlying hypotheses. All
    versions of the scientific method involve
    testing.
  5. Conclusion – A conclusion is drawn from
    the results of an experiment. Rejected
    hypotheses are discarded and hypotheses
    that are not rejected are carried forward
    into future work. A series of accepted,
    related hypotheses are the basis for a
    theory.
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10
Q

Theory

A

is a unifying explanation for a broad range of observations.

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11
Q

Independent Variable IV

A

the one variable that you are changing

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12
Q

Dependent Variable DV

A

the one variable you think is affected by the IV You are experimenting to see if there is a relationship between IV and DV

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13
Q

Control Variables

A

all of the other variables that are kept the same

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14
Q

Hr

A

is the hypothesis stating that there is a difference caused by the independent variable, as to its effect on the dependent variable. Note, the Hr does not state the nature of the difference, but only that there is a difference.

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15
Q

Null Hypothesis (N0)

A

is the hypothesis of no difference; there is NO difference caused by the independent variable as to its effect on the dependent variable.

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16
Q

Alternate Hypothesis (Ha1)

A

describes one nature of the difference alluded to in the Hr and is the hypothesis which we expect to occur (consistent with our
prediction/conjecture).

17
Q

2nd alternative hypothesis (Ha2).

A

describes a different (and
generally opposing) nature of the difference alluded to in the Hr and is the hypothesis which we DO NOT expect to occur. Generally, Ha1 and Ha2 describe opposing responses (increase vs. decrease, positive correlation vs. negative correlation, etc.).

18
Q

Variable

A

is any aspect of nature that is capable
of changing.

19
Q

Correlation

A

two variables behave in an interrelated manner:
the value of one variable predicts the value of the
other variable.

20
Q

Continuos Variable

A

Infinite number of measurements between any two points. (line graph).

21
Q

Discrete Variable

A

Non-overlapping categories; no in-between. (column graph).

22
Q

Interpolation

A

Estimating among known data points

23
Q

Extrapolation

A

Estimating beyond known data points

24
Q

Dermal Tissue

A

forms the outermost layer.

25
Vascular Tissue
contain tube-like cells that conduct either water or food.
26
Ground Tissue
is any other type of tissue found in plants.
27
Phloem
transports food such as sugars made through photosynthesis
28
Xylem
transports water and mineral nutrients
29
Sieve Tubes
are the food-conducting tubes in phloem; they are made up of long, tubelike living cells joined end to end and connected through openings in their end walls.
30
Angiosperms
are divided into two main groups based on their structure: dicots and monocots.
31
Flowers
Angiosperms facilitate sexual reproduction by bringing together the male and female gametes.
32
Dicots
largest group of flowering plants that have leaf veins in a netlike pattern.
33
Taproot
Found in dicots where there is a main root with many branches.
34
Cotyledons (also found in dicots)
food-storing organs that are part of the tiny, embryonic seedling that lies inside a seed.
35
Monocots
include all the grasses, members of the lily family, palm trees, and banana plants.
36
Fibrous roots (monocot)
Tuft like roots which lack a main dominant root.
37
Fruit
is a mature ovary with seeds inside it.
38
Prediction
says what will happen in an experiment if the hypothesis is correct.