Difference between revisions of "Variable"
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|[[File:MapleLeaf.png|center|200px]] | |[[File:MapleLeaf.png|center|200px]] | ||
|[[File:ChestnutLeaf.png|center|200px]] | |[[File:ChestnutLeaf.png|center|200px]] | ||
− | | | + | | style="height:20px; width:200px; text-align:left;" | |
− | *The | + | *The type of leaf chosen was the '''independent variable'''. |
*The colour of the leaves was the '''dependent variable''' | *The colour of the leaves was the '''dependent variable''' | ||
*The experiment was done at the same time of year for every tree because at different times leaves can change colour or fall off. This was a '''control variable''' | *The experiment was done at the same time of year for every tree because at different times leaves can change colour or fall off. This was a '''control variable''' | ||
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|- | |- | ||
|[[File:Results4.png|center|300px]] | |[[File:Results4.png|center|300px]] | ||
− | | | + | | style="height:20px; width:200px; text-align:left;" | |
*The type of food chosen was the '''independent variable'''. | *The type of food chosen was the '''independent variable'''. | ||
*The colour of the iodine after being added to food was the '''dependent variable'''. | *The colour of the iodine after being added to food was the '''dependent variable'''. | ||
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*'''Control Variable''': How much you watered them. They should both be watered the same amount to make it a [[Fair Test|fair test]]. | *'''Control Variable''': How much you watered them. They should both be watered the same amount to make it a [[Fair Test|fair test]]. | ||
|} | |} | ||
+ | |||
+ | ==Key Stage 3== | ||
+ | ===Meaning=== | ||
+ | A '''variable''' is anything which could affect the [[result]]s of an [[experiment]] or that you can change, keep the same, or [[measure]]/[[observe]] in an [[investigation]]. | ||
+ | |||
+ | ===About Variables=== | ||
+ | : There are three groups of '''variable''' in an [[experiment]]: | ||
+ | :*[[Independent Variable]]: The thing you choose to change in an [[investigation]]. | ||
+ | :*[[Control Variable]]s: The things you keep the same in an [[investigation]] to make it a [[Fair Test|fair test]]. | ||
+ | :*[[Dependent Variable]]: The thing you measure or observe in an [[investigation]]. | ||
+ | : In an experiment or investigation there should only be 1 [[Independent Variable|independent variable]]. If you change more than one thing at a time, it is not a [[Fair Test|fair test]]. | ||
+ | |||
+ | ==Key Stage 4== | ||
+ | ===Meaning=== | ||
+ | A '''variable''' is anything which could affect the [[result]]s of an [[experiment]] or that you can change, keep the same, or [[measure]]/[[observe]] in an [[investigation]]. | ||
+ | |||
+ | ===About Variables=== | ||
+ | : There are three groups of '''variable''' in an [[experiment]]: | ||
+ | :*[[Independent Variable]]: The thing you choose to change in an [[investigation]]. | ||
+ | :*[[Control Variable]]s: The things you keep the same in an [[investigation]] to make it a [[Fair Test|fair test]]. | ||
+ | :*[[Dependent Variable]]: The thing you measure or observe in an [[investigation]]. | ||
+ | : In an experiment or investigation there should only be 1 [[Independent Variable|independent variable]]. If you change more than one thing at a time, it is not a [[Fair Test|fair test]]. | ||
+ | |||
+ | : There are three different types of '''variable''' which can be recorded in an [[experiment]]: | ||
+ | :*[[Categoric Variable]] - A variable that changes by category, not by numerical values (eg eye colour, blood type, type of animal.) | ||
+ | :*[[Discrete Variable]] - A variable which can only be specific values with no numbers in between (eg shoe size, number of people, number of [[atom]]s). | ||
+ | :*[[Continuous Variable]] - A variable which has any possible value (eg [[height]], [[time]], [[temperature]], [[Electrical Current|current]]). | ||
+ | |||
+ | ===References=== | ||
+ | ====AQA==== | ||
+ | |||
+ | :[https://www.amazon.co.uk/gp/product/1782946403/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782946403&linkCode=as2&tag=nrjc-21&linkId=32a0abb60dff015b15b50e9b1d7b4644 ''Variables page 9, GCSE Combined Science Trilogy; Physics, CGP, AQA ''] | ||
+ | :[https://www.amazon.co.uk/gp/product/1782945970/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945970&linkCode=as2&tag=nrjc-21&linkId=a120d24dcc7cc7a58192069a3aafc1d2 ''Variables, page 10, GCSE Physics; The Complete 9-1 Course for AQA, CGP, AQA ''] | ||
+ | :[https://www.amazon.co.uk/gp/product/1471851338/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1471851338&linkCode=as2&tag=nrjc-21&linkId=425855d5890466e47189e1c21b67a1ea ''Variables, page 118, GCSE Biology, Hodder, AQA ''] | ||
+ | :[https://www.amazon.co.uk/gp/product/0008158754/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0008158754&linkCode=as2&tag=nrjc-21&linkId=27ad53b0283feeff7fc5ae04a9e205f585 ''Variables, page 370-1, GCSE Biology; Student Book, Collins, AQA ''] | ||
+ | :[https://www.amazon.co.uk/gp/product/1782945563/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945563&linkCode=as2&tag=nrjc-21&linkId=9a1d023a374038e6072f33c4f3cf808b ''Variables, page 4, GCSE Biology; The Revision Guide, CGP, AQA ''] | ||
+ | :[https://www.amazon.co.uk/gp/product/1782945598/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945598&linkCode=as2&tag=nrjc-21&linkId=ad276ad49df77ab4b40ab4fd0fe10394 ''Variables, page 4, GCSE Combined Science; The Revision Guide, CGP, AQA ''] | ||
+ | :[https://www.amazon.co.uk/gp/product/178294558X/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=178294558X&linkCode=as2&tag=nrjc-21&linkId=f0dfb66dafcb0c6e9449e7b1a4ae1ac478 ''Variables, page 4, GCSE Physics; The Revision Guide, CGP, AQA ''] | ||
+ | :[https://www.amazon.co.uk/gp/product/1782945962/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945962&linkCode=as2&tag=nrjc-21&linkId=476bb5c8d1dfb5c08ac81b6d4d1c98d8 ''Variables, pages 10, 16, GCSE Chemistry, CGP, AQA ''] | ||
+ | :[https://www.amazon.co.uk/gp/product/178294639X/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=178294639X&linkCode=as2&tag=nrjc-21&linkId=51599bb45a2bfaf7c1b6a978b2ca2616 ''Variables, pages 10, 16, GCSE Combined Science Trilogy; Chemistry, CGP, AQA ''] | ||
+ | :[https://www.amazon.co.uk/gp/product/1471851354/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1471851354&linkCode=as2&tag=nrjc-21&linkId=9012a0d354024419214fb3ad5ac44ba0 ''Variables, pages 103, 241-2, GCSE Combined Science Trilogy 1, Hodder, AQA ''] | ||
+ | :[https://www.amazon.co.uk/gp/product/1471851346/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1471851346&linkCode=as2&tag=nrjc-21&linkId=3ac654f4b0da781c49c855a1af4c92ea ''Variables, pages 144-5, GCSE Chemistry, Hodder, AQA ''] | ||
+ | :[https://www.amazon.co.uk/gp/product/1471851370/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1471851370&linkCode=as2&tag=nrjc-21&linkId=01c69b0ae058f809cf636033e6ba793e ''Variables, pages 17-18, 178, GCSE Physics, Hodder, AQA ''] | ||
+ | :[https://www.amazon.co.uk/gp/product/1471851362/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1471851362&linkCode=as2&tag=nrjc-21&linkId=7d78d70a2044ee9982dae010c94af92a ''Variables, pages 253, GCSE Combined Science Trilogy 2, Hodder, AQA ''] | ||
+ | :[https://www.amazon.co.uk/gp/product/0198359381/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0198359381&linkCode=as2&tag=nrjc-21&linkId=47c8d1ae58d8b3a5e2094cd447154558 ''Variables, pages 264-265, GCSE Chemistry; Third Edition, Oxford University Press, AQA ''] | ||
+ | :[https://www.amazon.co.uk/gp/product/019835939X/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=019835939X&linkCode=as2&tag=nrjc-21&linkId=57e96876985fc39b1a3d8a3e3dc238b6 ''Variables, pages 277-279, GCSE Physics; Third Edition, Oxford University Press, AQA ''] | ||
+ | :[https://www.amazon.co.uk/gp/product/1782945571/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945571&linkCode=as2&tag=nrjc-21&linkId=9e29fad914244909903e5e93f8a01d267 ''Variables, pages 5, 8, GCSE Chemistry; The Revision Guide, CGP, AQA ''] | ||
+ | |||
+ | ====Edexcel==== | ||
+ | |||
+ | :[https://www.amazon.co.uk/gp/product/1782948120/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782948120&linkCode=as2&tag=nrjc-21&linkId=dedef775c6a43dbb0a609441525adac0 ''Variables, page 10, GCSE Biology, CGP, Edexcel ''] | ||
+ | :[https://www.amazon.co.uk/gp/product/1782948163/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782948163&linkCode=as2&tag=nrjc-21&linkId=0fdbfd5dd397d6e24a9dfb250f08587f ''Variables, page 10, GCSE Physics, CGP, Edexcel ''] | ||
+ | :[https://www.amazon.co.uk/gp/product/1292120215/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1292120215&linkCode=as2&tag=nrjc-21&linkId=8f96ddb76196848bafdb124354e4cf77 ''Variables, page 136, GCSE Chemistry, Pearson, Edexcel ''] | ||
+ | :[https://www.amazon.co.uk/gp/product/1782945741/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945741&linkCode=as2&tag=nrjc-21&linkId=30da4f2178da182547b62a7329d13b57 ''Variables, page 4, GCSE Combined Science; The Revision Guide, CGP, Edexcel ''] | ||
+ | :[https://www.amazon.co.uk/gp/product/1782946748/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782946748&linkCode=as2&tag=nrjc-21&linkId=a4f0348fc37d0ba1bb52d27f8679581f ''Variables, page 5, GCSE Biology; The Revision Guide, CGP, Edexcel ''] | ||
+ | :[https://www.amazon.co.uk/gp/product/1782945725/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945725&linkCode=as2&tag=nrjc-21&linkId=694be7494de75af3349537d34e13f7f0 ''Variables, page 5, GCSE Chemistry; The Revision Guide, CGP, Edexcel ''] | ||
+ | :[https://www.amazon.co.uk/gp/product/1782945733/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945733&linkCode=as2&tag=nrjc-21&linkId=2a2dbec9db6bf5766c0458d908fa0a52 ''Variables, page 5, GCSE Physics; The Revision Guide, CGP, Edexcel ''] | ||
+ | :[https://www.amazon.co.uk/gp/product/1782948147/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782948147&linkCode=as2&tag=nrjc-21&linkId=f63dcd8345f4e49c717b39a228a36c7c ''Variables, pages 9-1, 16, 17, 20, 21, GCSE Chemistry, CGP, Edexcel ''] | ||
+ | |||
+ | ====OCR==== | ||
+ | :[https://www.amazon.co.uk/gp/product/1782945695/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945695&linkCode=as2&tag=nrjc-21&linkId=ceafcc80bcad6b6754ee97a0c7ceea53 ''Variables, page 4, Gateway GCSE Combined Science; The Revision Guide, CGP, OCR ''] | ||
+ | :[https://www.amazon.co.uk/gp/product/1782945679/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945679&linkCode=as2&tag=nrjc-21&linkId=a2db42f7b4bdf10cafaafa3bb9120940 ''Variables, page 5, Gateway GCSE Chemistry; The Revision Guide, CGP, OCR ''] | ||
+ | :[https://www.amazon.co.uk/gp/product/1782945660/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945660&linkCode=as2&tag=nrjc-21&linkId=83aa4500ad7759e7f401a1c5ba5df758 ''Variables, pages 5, 8, Gateway GCSE Biology; The Revision Guide, CGP, OCR ''] | ||
+ | :[https://www.amazon.co.uk/gp/product/1782945687/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945687&linkCode=as2&tag=nrjc-21&linkId=9a598e52189317a20311d7a632747bc9 ''Variables, pages 5, 8, Gateway GCSE Physics; The Revision Guide, CGP, OCR ''] | ||
+ | :[https://www.amazon.co.uk/gp/product/0198359810/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0198359810&linkCode=as2&tag=nrjc-21&linkId=d768d99f1a06f7c12fab40e5aef85a55 ''Variables, pages 8, 12-15, 281-282, 288-289, Gateway GCSE Biology, Oxford, OCR ''] | ||
+ | :[https://www.amazon.co.uk/gp/product/0198359837/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0198359837&linkCode=as2&tag=nrjc-21&linkId=3c4229e8b023b2b60768e7ea2307cc6f ''Variables, pages 8, 12-15, 282-283, 287-288, Gateway GCSE Physics, Oxford, OCR ''] | ||
+ | :[https://www.amazon.co.uk/gp/product/0198359829/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0198359829&linkCode=as2&tag=nrjc-21&linkId=90e8d7b4f039d53035238fa0320fe00b ''Variables, pages 8, 14-15, 278, 296-297, 302-303, Gateway GCSE Chemistry, Oxford, OCR ''] |
Latest revision as of 10:42, 25 December 2019
Contents
Key Stage 2
Meaning
A variable is something that you can change, keep the same, or measure/observe in an investigation.
About Variables
- There are three types of variable.
- Independent Variable: The thing you choose to change in an investigation.
- Control Variables: The things you keep the same in an investigation to make it a fair test.
- Dependent Variable: The thing you measure or observe in an investigation.
- In an experiment or investigation there should only be 1 independent variable. If you change more than one thing at a time, it is not a fair test.
Examples
An investigation to test the claim: All leaves are green.
Oak Leaf | Beech Leaf | Ash Leaf |
Maple Leaf | Chestnut Leaf | Variables |
|
Results Table | Variables |
|
Experiment | Variables |
Cress seeds were put in pots with soil with half placed in a dark cupboard and half on a windowsill. |
|
Key Stage 3
Meaning
A variable is anything which could affect the results of an experiment or that you can change, keep the same, or measure/observe in an investigation.
About Variables
- There are three groups of variable in an experiment:
- Independent Variable: The thing you choose to change in an investigation.
- Control Variables: The things you keep the same in an investigation to make it a fair test.
- Dependent Variable: The thing you measure or observe in an investigation.
- In an experiment or investigation there should only be 1 independent variable. If you change more than one thing at a time, it is not a fair test.
Key Stage 4
Meaning
A variable is anything which could affect the results of an experiment or that you can change, keep the same, or measure/observe in an investigation.
About Variables
- There are three groups of variable in an experiment:
- Independent Variable: The thing you choose to change in an investigation.
- Control Variables: The things you keep the same in an investigation to make it a fair test.
- Dependent Variable: The thing you measure or observe in an investigation.
- In an experiment or investigation there should only be 1 independent variable. If you change more than one thing at a time, it is not a fair test.
- There are three different types of variable which can be recorded in an experiment:
- Categoric Variable - A variable that changes by category, not by numerical values (eg eye colour, blood type, type of animal.)
- Discrete Variable - A variable which can only be specific values with no numbers in between (eg shoe size, number of people, number of atoms).
- Continuous Variable - A variable which has any possible value (eg height, time, temperature, current).
References
AQA
- Variables page 9, GCSE Combined Science Trilogy; Physics, CGP, AQA
- Variables, page 10, GCSE Physics; The Complete 9-1 Course for AQA, CGP, AQA
- Variables, page 118, GCSE Biology, Hodder, AQA
- Variables, page 370-1, GCSE Biology; Student Book, Collins, AQA
- Variables, page 4, GCSE Biology; The Revision Guide, CGP, AQA
- Variables, page 4, GCSE Combined Science; The Revision Guide, CGP, AQA
- Variables, page 4, GCSE Physics; The Revision Guide, CGP, AQA
- Variables, pages 10, 16, GCSE Chemistry, CGP, AQA
- Variables, pages 10, 16, GCSE Combined Science Trilogy; Chemistry, CGP, AQA
- Variables, pages 103, 241-2, GCSE Combined Science Trilogy 1, Hodder, AQA
- Variables, pages 144-5, GCSE Chemistry, Hodder, AQA
- Variables, pages 17-18, 178, GCSE Physics, Hodder, AQA
- Variables, pages 253, GCSE Combined Science Trilogy 2, Hodder, AQA
- Variables, pages 264-265, GCSE Chemistry; Third Edition, Oxford University Press, AQA
- Variables, pages 277-279, GCSE Physics; Third Edition, Oxford University Press, AQA
- Variables, pages 5, 8, GCSE Chemistry; The Revision Guide, CGP, AQA
Edexcel
- Variables, page 10, GCSE Biology, CGP, Edexcel
- Variables, page 10, GCSE Physics, CGP, Edexcel
- Variables, page 136, GCSE Chemistry, Pearson, Edexcel
- Variables, page 4, GCSE Combined Science; The Revision Guide, CGP, Edexcel
- Variables, page 5, GCSE Biology; The Revision Guide, CGP, Edexcel
- Variables, page 5, GCSE Chemistry; The Revision Guide, CGP, Edexcel
- Variables, page 5, GCSE Physics; The Revision Guide, CGP, Edexcel
- Variables, pages 9-1, 16, 17, 20, 21, GCSE Chemistry, CGP, Edexcel
OCR
- Variables, page 4, Gateway GCSE Combined Science; The Revision Guide, CGP, OCR
- Variables, page 5, Gateway GCSE Chemistry; The Revision Guide, CGP, OCR
- Variables, pages 5, 8, Gateway GCSE Biology; The Revision Guide, CGP, OCR
- Variables, pages 5, 8, Gateway GCSE Physics; The Revision Guide, CGP, OCR
- Variables, pages 8, 12-15, 281-282, 288-289, Gateway GCSE Biology, Oxford, OCR
- Variables, pages 8, 12-15, 282-283, 287-288, Gateway GCSE Physics, Oxford, OCR
- Variables, pages 8, 14-15, 278, 296-297, 302-303, Gateway GCSE Chemistry, Oxford, OCR