Practical skills Flashcards

To revise key practical terms (Paper 1 and 2)

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1
Q

Define an indépendant variable

A

The one variable that you change

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2
Q

Define a dependant variable

A

The variable that you measure

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3
Q

Define a control variable

A

Any variable you keep the same to make it a fair test

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4
Q

Define directly proportional

A

If one variable increases the other variable increases at the same rate. eg if x doubles then y must double

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5
Q

Define inversely proportional

A

If one variable increases the other variable decreases at the same rate. eg if x doubles then y must halve

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6
Q

Define an anomalous result

A

An result which does fit the pattern of trend

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7
Q

Define interval

A

The spacing between measurements eg 0, 10, 20, 30 40, 50 cm would have an interval of 10

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8
Q

Define range

A

The maximum and minimum values eg 0, 10, 20, 30, 40, 50 would have a range of 50 - 0 cm

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9
Q

Define resolution

A

The smallest change that can be measured with a particular piece of equipment

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10
Q

How can the uncertainty in a measurement be measured?

A

Half of the range

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11
Q

When should you draw a line graph

A

When both variables are continuous

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12
Q

When should you draw a bar graph

A

If one of the variables is discrete or categoric

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13
Q

Define a continuos variable

A

Can be recored as any number eg time, mass, volume

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14
Q

Define a discrete variable

A

Can be recored only as a whole number eg number of goals in a match

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15
Q

Define a catergoic variable

A

Is recored in words instead of numbers eg colours or types of metal

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