ScientificPrinciplesTest

Name,Score

60Minutes20Questions

Directions:Solveeachproblem,choosethecorrectanswer,andthenfillinthecorrespondingovalonyouranswerdocument.

1.CanexplainmoreexactlyofDarwin'stheoryofevolutionis(A)

A.Thegeneticvariation→Thestruggleforlife→Thesurvivalofthefittest

B.Environmentalchange→Directionalvariation→Tobadforoptimal

C.Thestruggleforlife→Tobadforoptimal→mutation

D.variation→genetic→Thesurvivalofthefittest

2.Playsanimportantroleinbiologicalgeneticcellularstructureis(B)

A.ThecellwallBThecellmembraneCThecytoplasmDThenucleus

3.Cellularstructurecanisforenergyconversion(D)

A.ThecellmembraneB.ThenucleusC.TheendoplasmicreticulumD.Themitochondria

4.themostoutsidethestructureofthehumancellsIs(B)

A.ThecellwallBThecellmembraneC.chloroplastD.Thenucleus

5.correctlyindicatestherelationbetweenconceptsIs(B)

A.Thenucleus>gene>chromosome>DNAB.Thenucleus>chromosome>DNA>gene

C.chromosome>nucleus>gene>DNAD.Thenucleus>DNA>chromosome>gene

6.Inthecellsofthehumanbody,chromosomenumberis(B)pairs.

A.22B.23C.44D.46

7.Thestateofnature,Boysandgirlsbornchance(C)

A.Boys>girlsB.Boys<girlsC.equalD.Notequal

8.IntheUnitedStatesthetemperatureonasummerdaymightbe880F,Whatwouldthistemperaturebe(A)

A.310CB.31KC.310FD.3040C

9.Givethefollowingnumbersinscientificnotationorstandardform,Incorrectis(C)

A.16000=1.6×104B.0.00549=5.49×10-3

C.3.50×109×2.239×10-4=7.837×105D.9876.4=9.8764×103

10.StepsintheScientificMethod(A)

=1\*GB3

①

Observing

=2\*GB3

②

MakingHypotheses

=3\*GB3

③

Experiments

=4\*GB3

④

OrganisingandAnalysingData

=5\*GB3

⑤

Formingatheory

A.

=1\*GB3

①

=2\*GB3

②

=3\*GB3

③

=4\*GB3

④

=5\*GB3

⑤

B.

=1\*GB3

①

=3\*GB3

③

=4\*GB3

④

=5\*GB3

⑤

=2\*GB3

②

C.

=1\*GB3

①

=3\*GB3

③

=2\*GB3

②

=4\*GB3

④

=5\*GB3

⑤

D.

=1\*GB3

①

=2\*GB3

②

=4\*GB3

④

=3\*GB3

③

=5\*GB3

⑤

11.Placedinthe"thependulumswingcycleandlongrelationship"inthisexperiment,shouldbecontrolled(C)

A.Pendulumislongandtheballqualityisconstant

B.Oscillatingcycleandoscillationamplitudeunchanged.

C.Puttheballqualityandoscillationamplitudeunchanged

D.Puttheballqualityandoscillationcycleisconstant

12.writingtheNamingformulaoftypeIunivalentbinaryioniccompounds

formula

name

NaCl

Sodiumchloride

KI

Potassiumiodide

MgCl2

Magnesiumchloride

13.Thefollowingiscorrect()

atom

Isotopicsymbol

A

AnatomofFluorinewith10neutrons

199F

B

AnatomofBerylliumwithmassnumber4

104Be

C

Aneutralatomwith6electronsandamassnumberof12

612C

D

Anatomwithmassnumber39andneutrons19

3920K

14NamethefollowingtypeIIbinarycompoundsusingtheIUPACSystem

formula

name

MnS

Manganese(II)sulphide

MnCl3

Manganese(III)chloride

FeP

Iron(III)phosphide

Co3P2

Cobalt(II)phosphide

NiF3

Nickel(III)fluoride

CoS

Cobalt(II)silfide

As2O3

Arsenic(III)oxide

15.Fillintheblanks

Potassium

Symbo

Fe

Xe

Atomicnumber

19

20

Massnumber

39

Averageatomicmass

39.1

Isotopesymbol

3919K

Typeofelement

metal

Non-metal

family

Alkalimetal

Transitionmetal

Alkalineearthmetals

Inertgas

16.setoutbelowaretwosetsofassociatedtermsintwocolumns.matchtheterminthefirstcolumnwithitscorrespondingterminthesecondcolumnbywritingthecorrectletterintheanswercolumn.

Term

Answer

Definition

1

Biochemistry

C

A

Pollutionchemistry

2

Volcanology

F

B

Chemistryofnon-carbonsubstances

3

InorganicChemistry

B

C

Chemistryoflivingspecies

4

Biology

D

D

Studyoflivingthings

5

EnvironmentalChemistry

A

E

Organismsandtheirenvironment

6

Ecology

E

F

Studyofvolcanoes

17.describewhatishappening()

A.aballthrownintotheair

B.Acarforacceleratedmotion.

C.Acarforaslowmovement.

D.Acaracceleratinguniformlytoaconstantspeed.

18.Anobjecttodouniformmotioninastraightline.Themovementofthejourneytimeimageasshowninfigurea,Accordingtoaimageinbfiguredrawtheimagemotionspeedofthetime．

19.Howwouldyoudesignanexperimenttotesttheeffectoftealeavesonthevegetablesgrowtaller?

(1)Whatwasthehypothesisbeingtested?

Thattheadditionoftealeavesstimulatedplantgrowth.

(2)Listthecontrolledfactorsintheexperiment.

Planttype,plantnumbers,potsize,potmaterial,soil,amountofsunlightandamountofwater.

(3)Whatwasobservedinthisexperiment?

Plantheightandconditionofplant.

(4)Whatconclusionscouldyoudrawfromthisexperiment?

Theadditionoftealeaveswillstimulateplantgrowthundercontrolledconditionforthistypeofplant.

20.WriteaScientificReporton“Galileo,sSimplependulumexperiment“.

(1)Thetitle:--Toexploretheperiodofpendulumtosuchfactorsasthelengthofrelationship-

(2)Abstract:--Thisarticleadoptsthecycleofcontrolvariablemethodtoexplorethependulumandthelengthofthependulum,therangeofthependulumisqualityandJane'srelationship.

(3)Introduction:

=1\*GB3

①

Whytostudythisproblem?

Relatedtotheprincipleoftheclock.

=2\*GB3

②

whatisknowledgeonthisproblematpresent?

Pendulumislongandtheamplitudeandthecyclewillinfluencetheweightofthependulum

=3\*GB3

③

whatisGalileowanttosolvetheproblem?

Pendulumcycleandthelengthofthependulum,therangeofthependulumisthequalityandtherelationshipbetween

(4)Methods:

=1\*GB3

①

whatistheresearchneedtouseequipment?

-

=1\*GB3

①

somestring,

=2\*GB3

②

weights,

=3\*GB3

③

atapemeasure

=4\*GB3

④

aplacetohangyourweights

=5\*GB3

⑤

watch

=2\*GB3

②

Theexperimentusedinthescientificmethodwascalled

Controlvariablemethod

(5)Results:

Thefollowingtableistheresultofthestudentsrecords,Fillintheblanks

Trial

Puttheballquality

（G）

Amplitude

（o）

Length

(cm）

Number

ofswings

Time

（s）

Cycle

（S）

1

30

40

100

10

20

2

2

20

40

100

20

40

2

3

30

20

100

15

30

2

4

30

40

144

10

24

2.4

(6)Discussion:Writeyourconclusionsinthetablebelow:

Whatwereyoutesting?

Whatdidyoufindout?

Trial(1and2)

Whenthelengthofthependulumandputthemagnitudeofthephaseatthesametime,

Changethequalityof