Working Scientifically Flashcards

1
Q

Define

independent variable.

A

the variable you change

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2
Q

Define

dependent variable.

A

the variable you measure when you change the independent variable

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3
Q

Define

control variables.

A

the variables that you keep the same

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4
Q

Define

control experiment.

A

an experiment that is kept under the same conditions as the rest of the investigation, but doesn’t have anything done to it

this is so that you can see what happens when you don’t change anything

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5
Q

Define

accurate data.

A

data that is very close to the true answer

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6
Q

Define

precise data.

A

data that is all really close to the mean of your repeated results

(not spread out)

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7
Q

Define

resolution.

A

the smallest change a measuring instrument can detect

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8
Q

Define

anomolous result.

A

a result that doesn’t fit in with the rest at all

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9
Q

Define

categoric data.

A

data that comes in distinct categories

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10
Q

Define

discrete data.

A

data that can be counted in chunks

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11
Q

Define

continuous data.

A

numerical data that can have any value within a range

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12
Q

Define

positive correlation.

A

as one variable increases the other increases

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13
Q

Define

negative correlation.

A

as one variable increases the other decreases

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14
Q

Define

no correlation.

A

no relationship between the two variables

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15
Q

State the

order of unit prefixes in ascending order.

(and their multiple of unit in 10^x)

A

nano (n) - -9
micro (μ) - -6
milli (m) - -3
centi (c) - -2
deci (d) - -1
0
kilo (k) - 3
mega (M) - 6
giga (G) - 9
tera (T) - 12

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16
Q

Define

uncertainty.

A

the amount of error you measurements might have

17
Q

How would you calculate

uncertainty?

A

range/2