NAME: _____________________________ FORM:_____________________

PART A20 OBJECITVE QUESTIONSINSTRUCTION: Answer all questions. Each question is followed by four answers. Choose the best answer for each question.

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SMK SERI MUTIARA CHERAS KUALA LUMPURTEST 1 SCIENCE FORM 4 2014

Time: 1 hour

Markah:

1. Which of the following statement is true concerning hypothesis?

A. A hypothesis is a true statement.B. A hypothesis is a false statement.C. A hypothesis may be a true or false

statement.D. A hypothesis is a scientific theory.

2. A student planned a scientific investigation. After identifying the variables and forming a hypothesis, the next step should take is

A. making a conclusion.B. planning the experiment.C. collecting data of experiment.D. writing the report of experiment.

3. Diagram 1 shows parts of the human nervous system. Which part controls body balance ?

4. The human nervous system consists of

A. somatic nervous system and autonomic nervous system

B. central nervous system and endocrine nervous system

C. endocrine system and autonomic nervous system

D. peripheral nervous system and central nervous system

5. The human central nervous system is composed of the brain and the …

A. axon.B. Dendron.C. spinal cord.D. cell body.

6. What is the main function of neurones?A. Secretion of hormonesB. Production of energyC. Transmission of impulses D. Contraction of muscles

7. Which of the following is the largest part of the brain?A. CerebellumB. Medulla oblongataC. CerebrumD. Spinal cord

8. Which of the following controls body coordination?

A. BonesB. NeuronesC. MusclesD. Endocrine and nervous system

9. Diagram 2 shows the typical structure of a motor neurone.

Diagram 2

Which of the following pairs is correct?

2

A

B

C

D

Diagram 1

10.

Proprioceptors are receptors which are sensitive to

A lightB soundC smellsD movements

11. What is the function of the medulla oblongata?

A. To control involuntary actionsB. To maintain hormone balanceC. To receive and interpret impulsesD. To control voluntary actions

12. The flow chart in diagram 4 below shows the impulse pathway in nervous coordination.

Diagram 4

Which of the following represent X and Y X YA. Receptor EffectorB. Receptor Spinal cordC. Gland Effector D. Effector Receptor

13. Which of the following is the characteristic of a reflex action?

I. It is a slow response.II. It takes place in the spinal

cord.III. It protects us from injuries.

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

14. Which of the following is a characteristic of voluntary actions?

A. It is controlled by the cerebellum. B. Reaction is carried out by internal

organs. C. The impulse travels from the brain

to certain muscles. D. It reacts unconsciously.

15. Proprioceptor are present in the following except

I. brainII. tendons

III. muscles IV. ligaments

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

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Structure FunctionA J Transmitting nerve

impulses towards the cell body.

B K Transmitting nerve impulses away from the cell body.

C L Decreasing the rate of transmission of nerve impulses.

D M Releasing chemical substances to stimulate the motor system.

stimuli X

response Y

brain

16. Diagram 5 shows a section of the human brain.

Diagram 5Which of the following is the effect of injury in section P?

A. Deaf B. BlindC. Limbs ParalysedD. Lost of body balance

17. The factors which can affect the state of mind are

I drug abuseII hormonal imbalanceIII excessive consumption of

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

18. A man was involved in an accident where part of the brain was injured. The doctor found that he could not maintain his posture and coordinate the movements of his arms. Which part of his central nervous system was injured?

A. Sensory neuroneB. Spinal cordC. CerebellumD. Spinal nerves

19. Diagram 6 shows the male endocrine system. Which of the following glands

A, B, C and D is the pituitary gland?

Diagram 6

20. Under-secretion of insulin will cause

A. goitreB. dwarfismC. gigantismD. diabetes mellitus

NAME: ___________________________FORM: ___________________________

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P

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PART A

ANSWER PAPER

1. [ A ] [ B ] [ C ] [ D ]

2. [ A ] [ B ] [ C ] [ D ]

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11. [ A ] [ B ] [ C ] [ D ]

12. [ A ] [ B ] [ C ] [ D ]

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20. [ A ] [ B ] [ C ] [ D ]

PART B (25 mark)Subjective Question

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Answer all questions in this section.

1. Table 1 shows an experiment to study the length of a pendulum thread and the time taken for ten complete oscillations. A 100g mass were attached to the different lengths of thread and made to swing. The time taken for ten complete oscillations were recorded in the table 1.

Length of pendulum (cm)

50 100 150

Time taken (s) 23 72 105Table 1

a) List all the variables involved.

(i) Manipulated variable: ____________________________________

(i) Responding variable : ____________________________________

(ii)Constant variable : ____________________________________

b) State one hypothesis for this experiment?

c) What is the period of oscillation for the length of pendulum is 150 cm?

d) If the length of the thread is 70 cm, predict the time taken for ten complete oscillations.

2. Diagram 1 shows the apparatus set up an experiment.

Diagram 1a) What is the aim of this experiment?

b) State the variables in the experiment.

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(3 marks)

( 1 mark)

(1 mark)

( 1 mark)

( 1 mark)

(i) manipulated variable: ____________________________________

(ii) responding variable: _____________________________________

(iii) constant variable: _______________________________________

c) State one application the result of the experiment.

________________________________________________________________

3. Diagram 2 shows a human brainDiagram 2

(a) Name the parts labeled A and B.

Part A : _________________________________________

Part B : _________________________________________

(2 marks)

(b) State one example of activities controlled by parts A and B.

Part A : _________________________________________

Part B : _________________________________________

(2 marks)

(c) In motorcycles accident, it was found that the victims die due to head injuries. State one method of reducing head injuries.

______________________________________________________________________ (1 mark)

4. Diagram 3 shows the endocrine glands found in the human body.

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Part BPart A Medulla Oblongata

( 3 mark)

( 1 mark)

Diagram 3(a Name the glands labelled A, B, C and D in the boxes provided.

(3 marks)

(b Which is the master gland of the endocrine system? (1 mark)

(c) Which hormone would be released when

(i) you are cold and shivering.

: __________________________________________________________

(ii)you are chased by a dog.

: ___________________________________________________________

(d) Name one effect if the ovary does not secrete hormone?

______________________________________________________________

5. Diagram 4 shows an activity that is carried out to study a reflex action.

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Diagram 4

E : Ovary

B :

A :

C :

D :

(2 mark)

(1 mark)

Student B knocks the knee of student A with hammer.

a) What can be observed?

(1mark)

b) Draw an arrow ( ) in diagram 1 to show the direction of his leg movement.

(1mark)c) Draw the pathway of the reflex arc.

(1mark)

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