PROCESS of SCIENCE REVIEW SHEET Name ______

PROCESS OF SCIENCE REVIEW SHEET Name ______

1:OBSERVEanobjectandwritedown3qualitativeand 3quantitativeobservationsfor it.

2:Write aninferencefor thefollowing statements.

• WhenI wokeup thedrivewaywaswet, the grasswas wet, and theskywas dark gray.

• WhenI lookedoutthewindowthere was acat in mytree!

3: ScientificMethod–Readthefollowingdescriptionof anexperimentandanswer the questionsthatfollow:

An experiment isbeingdonetodetermine howlight affectsthegrowthofsmallZinniaplants.Oneplant is placedin fullsunlight,thesecondina shadedarea,andthethirdin adark closet.

• What is thepurpose or research question?

• Whatwould apossiblehypothesisbeforthisexperiment? (If, then, because)

• What wouldpossiblybearesultofthisexperiment?

Foreach itembelow, specify the independentanddependentvariables, as well as constants.

1. A studywas doneto find if different tiretreadsaffect thebrakingdistanceof acar.

I:_D:

C:_

2. Thetime it takes to run amile depends on the person’s runningspeed.

I:

D:

C:_

3.Theheight of bean plants depends on theamount of watertheyreceive.

I:

D:

C:_

4.Thehigher thetemperatureof the air in theoven, the fasteracakewill bake.

I:

D:

C:_

5.Lemontrees receivingthe most waterproducedthe most lemons.

I:

D:

C:_

6.An investigationfoundthat morebushels of potatoes were produced when the soil wasfertilizedmore.

I:

D:

C:_

7.Students measured thetemperature of thewater atdifferent depths inLake Skywalkerandfoundthat the temperature varied.

I:

D:

C:_

8.Theamount of pollutionproducedbycars wasmeasured for cars using gasolinecontainingdifferentamounts of lead.

I:

D:

C:_

9.Fourgroups of rats are firstmassedand then fed identicaldietsexcept forthe amount ofvitamin A theyreceive.Eachgroupgets a different amount. After3 weekson the diet, the rats’massesare measured again to seeif therehas beena decrease.

I:

D:

C:_

Foreachexperiment below, specify the independentvariable, dependent variable,controlgroupand anyconstants.

1.A studentwanted to test how themass ofapaper airplane affected thedistanceit would fly.Paperclipswereadded before each test flight. As each paperclipwasadded, the plane was tested to determine howfar it wouldfly.

Independent variable

Dependent variable

Control

Constant

2.Twogroups of students weretested tocomparetheir speed workingmathproblems.Eachgroupwas giventhe sameproblems. One group used calculators and the othergroup computed without calculators.

Independent variable

Dependent variable

Control

Constant

3.Students of differentagesweregiven thesame puzzle to assemble.Thepuzzle assemblytime was measured.

Independent variable

Dependentvariable

Constant

There can be severalcontrolled variables. Ifanexperiment is tobeuseful,only onevariable ata time canbe manipulatedintentionally. All other variables must be controlled throughout allparts of theexperiment. Ifmore than onevariable is altered(changed),the resultsof an experimentcannot beinterpreted with any validity.

4.An experimentwasperformed to determinehow the amount of coffeegroundscouldaffect thetaste ofcoffee. Thesame kind ofcoffee, the samepercolator, the sameamountandtype ofwater, thesameperkingtime, and the sameelectricalsourceswere used.

Independent variable

Dependent variable

Constants(3)

Identifythe Controls andVariables