sc f 4 uk1 2011- p 1&2-edited 10.2.11

8/6/2019 Sc F 4 UK1 2011- P 1&2-Edited 10.2.11

http://slidepdf.com/reader/full/sc-f-4-uk1-2011-p-12-edited-10211 1/13

8/6/2019 Sc F 4 UK1 2011- P 1&2-Edited 10.2.11


1. Why is the scientific investigation method important ?I to acquired scientific knowledgeII to develop scientific and thinking skillsIII to train a person to test and verify his hypothesis through

experiment(s) before accepting itA I and II onlyB I and III onlyC II and III only

D I, IIandIII

2. U to Z show the steps involved in the scientific investigation method

Which of the following sequence shows the correct steps involve in thescientific investigation method?

A U, V, X, Z, Y, WB W, U, V, X, Z, YC Y, W, U, V, X, U

D V, X,Z, Y, W, U

3. Which of the following is a statement that identifies a problem?A What are the densities of objects that float in water B To determine the densities of object that float in water

C Objects that have densities less than the density of water will float in water

D All objects that are light float in water.

4. Data obtained from an experiment has to beA analysed and interpretedB definedC provenD classified and categorized

5. The variables that have to be controlled in a n experiment include theI Fixed variable(s)II manipulated variable(s )III responding variables(s)

A I and II onlyB II and III onlyC I and III onlyD I, II and III

2

U – Forming a hypothesisV – Planning the investigationW – Identifying the problemX – Making conclusionY – Analysing data

8/6/2019 Sc F 4 UK1 2011- P 1&2-Edited 10.2.11


6. Two objects, X and Y are placed in a measuring cylinder containing threedifferent liquids as shown in figure below.

Which of the following are the correct conclusion on the observation?I corn oils is less dense than water II Y is more tdense than water but is less dense than glycerineIII Y is less dense than corn oil

A I and II only

B I dan III onlyC II and III only

D I, II

and III

7. The graph in figure below shows the results of an experiment to studyhow the solubility of salt Q varies with temperature.

What is the manipulated variable and responding variable in thisexperiment?

Manipulated variable Responding variables

A Temperature Solubility

B Solubility Temperature

C Temperature Gradient of graph

D Solubility Gradient of graph

8. Table below shows the results of an experiment to study the rusting of iron

8/6/2019 Sc F 4 UK1 2011- P 1&2-Edited 10.2.11


8/6/2019 Sc F 4 UK1 2011- P 1&2-Edited 10.2.11


What conclusion can you draw from this experiment?A Iron does not rust in boiled water B Iron rusts when both water and oxygen is presentC Iron rust wherever oxygen is presentD Iron rusts at room temperature

9. Figure below shows an experiment to study how the rate of dissolutionof copper sulphate is affected by temperature .

What are fixed variables in this experiment?I The size of the copper sulphate crystalsII The mass of the copper sulphate crystalsIII The volume of water used

A I and II onlyB I and III onlyC II and III onlyD I, II and III

Questions No 10 to 12 are based on figure belowFigure below shows an experiment to determine the relationship betweenthe densities of substances and their ability to float in water.

10. In the experiment shown in figure , what is the fixed variables?

A Volume of glass C Volume of water B Volume of ice D Volume of cork

8/6/2019 Sc F 4 UK1 2011- P 1&2-Edited 10.2.11


11. In the experiment shown in figure what is the manipulated variable?A Type of beaker B Type of objectsC Type of liquidD Temperature

12. What is the suitable hypothesis for the experiment shown in figure?A All light objects will float in water B All heavy objects will sink in water C Objects that have a density lower than the density of water

will floatD Objects that have a density greater than the density of water

will float.

13. Nervous coordination in the body enables the body to carry out the following.

I Receiving and responding to stimuliII Detecting changes in the environmentIII Performing activities such as riding a bicycle

A. I and II onlyB. I and III onlyC. II and III onlyD. I, II and III

14.

A normal nervous impulse passes through the parts named above. Which isthe correct order?

A. Q, T, R, S, PB. T, P, S, Q, RC. P, T, S, R, QD. Q, S, T, R, P

15. Among the following, which does not involve the action of proprioceptors?A. Doing the skip jumpingB. Buttoning your shirt without looking at it.C. Estimating the weight of a mango.D. Observing the view around

16.

W A B C D

P: Receptor

Q: Effector R: Motor NeuroneS: Relay NeuroneT: Sensor Neurone

8/6/2019 Sc F 4 UK1 2011- P 1&2-Edited 10.2.11


16.

Which of the following will have a nervous pathway as shown in the aboveflow chart?

A. Reflex actionB. Conditioned reflex action

C. Involuntary actionD. Voluntary action

17. The figure shows an endocrine gland.

If this gland does not produce enough hormones, the person is most likelyto suffer from

A. HypertensionB. Hepatitis BC. Diabetes mellitusD. Heart disease

18. Why is the surface of the cerebellum highly folded?A. To provide more nutrientsB. To house more neuronsC. To speed up the transmission of impulsesD. To protect the brain from injuries

19. Which of the following comparisons is true about the nervous coordinationand hormonal coordination?

Nervous coordination Hormonal coordination

A The transmission of messages isslow

The transmission of messages israpid

B Affected area is localised Affected area is widespread

C The effect is permanent The effect is temporary

D The destinations of messages aretarget organs

The destinations of messages areeffectors

20.. Hormones that control secondary sexual characteristics in a woman includeI Oestrogen

II TestosteroneIII ProgesteroneA. I and II onlyB. I and III only

C. II and III onlyD. I, II and III .

Receptor cerebrum effector

8/6/2019 Sc F 4 UK1 2011- P 1&2-Edited 10.2.11


ANSWER TABLE FOR OBJECTIVE QUESTIONS

( 20 X 2 = / 40%

1 2 3 4 5

6 7 8 9 10

11 12 13 14 15

16 17 18 19 20

8/6/2019 Sc F 4 UK1 2011- P 1&2-Edited 10.2.11


STRUCTURE QUESTIONS ( 30 x 2 = /60 %)

1. The following results are obtained in an experiment to investigate the effect of thelength of a pendulum on its time of swing.

Length of pendulum(cm)

Time for 10 completeswings (seconds)

Average time for 1swing (seconds)

i. 30 11.0

ii. 50 14.0iii. 70 17.0

iv. 90 19.0

(a) Based on the above statement, write one suitable hypothesis.

……………………………………………………………………………………..[ 1 mark ]

(b) Complete the table above to show the average time taken for one complete swing.

[ 2 marks ](c) Draw a graph on the graph paper provided to show therelation between the length of the pendulum and the average time taken for one complete swing.

[ 3 marks]

8/6/2019 Sc F 4 UK1 2011- P 1&2-Edited 10.2.11


(d) From your graph, predict the average time taken for onecomplete swing of the pendulum of length 100 cm.

…………………………………………………………………………………………[ 2 marks]

(e) State the following variables in the experiment .

(i) Constant variables : ………………………………………………

(ii) Manipulated variables :…………………………………………..

(iii) Responding variables :…………………………………………..[ 3 marks]

(f) What conclusion can be make by the graph you haveobtained?

…………………………………………………………………………………

…………………………………………………………………………………..[ 1 mark ]

2. The figure below shows a neurone.

a) i) Name the neurone

………………………………………………………………………………………………….[ 1 mark]

ii) State its function.

………………………………………………………………………………………………….[ 1 mark ]

b) Name the parts labelled X and Y.

X:……………………………………………………………………………………………

Y :……………………………………………………………………………………………

[ 2 marks]c) Name the effector shown in the figure above.

8/6/2019 Sc F 4 UK1 2011- P 1&2-Edited 10.2.11


………………………………………………………………………………………………….[1 mark]

d) Draw the direction of impulse on the above diagram?

[ 1mark]e) What other parts of the body also act as effectors?

………………………………………………………………………………………………….[ 1 mark]

3. The figure below shows a vertical section through the human brain..

a) Name the parts labelled X , Y and Z.

X:……………………………Y:…………………………….. Z:……………………………

[ 3 marks]b) State the main function of each part.

Y:……………………………………………………………………………………………….

Z:……………………………………………………………………………………………….[ 2 marks]

c) The surface of the brain is folded. What is the advantage of this?

………………………………………………………………………………………………….

………………………………………………………………………………………………….[ 1 mark]

d) Name a nerve that connects a sense organ directly to the brain.

………………………………………………………………………………………………….[ 1 mark]

e) What is present in the space marked P?

………………………………………………………………………………………………….[ 1 mark ]

f) The brain requires two essential substances in order to function. Name them.

8/6/2019 Sc F 4 UK1 2011- P 1&2-Edited 10.2.11


sc f 4 uk1 2011- p 1&2-edited 10.2.11

Documents