07 jpnt fzk_f4_module4

JABATAN PELAJARAN TERENGGANU

BIMBINGAN EMaS TAHUN 2007

PHYSICS

Module 4

Panels:

Ahmad bin Ismail
Noormi bin Ramli
Mohd Zamry bin Abdullah
Mamat bin Sulong
Zainal bin Yono

1 Diagram 1.1 shows an instrument for measuring atmospheric pressure .

Diagram 1.1

(a) (i) Name the instrument.

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

(ii) Why is mercury use in the instrument ?

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

(b) Calculate the atmospheric pressure in N m - 2 .
[ Density of Mercury = 1.36 x 10 4 kg m - 3]

(c) Diagram 1. 2 shows the instrument being placed in a vacuum chamber .

Diagram 1.2

2

Complete the sentence by ticking (√ the correct word in the box.
)
The level of the mercury column in Diagram 2.1 is at ……..

P

Q

R

S

2 Diagram 2.1 shows a manometer which can be used to measure gas pressure.

Diagram 2.1

(a) (i) Name the liquid X.

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

(ii) Give the reason for your answer in (a)(i).

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

3

(b) The gas tap is opened so that gas can flow to the rubber tube into the manometer.

Diagram 2.2

(i) On Diagram 2.2, draw the levels of the liquid in both arms of the manometer if
the pressure of the gas greater than the atmospheric pressure.

(ii) If the pressure of the gas = 100 cm of Hg , the atmospheric pressure = 75
cm of Hg, what is the different height of the liquid X in the manometer ?

4

3 Diagram 3.1 shows a student jumping from a certain height towards the floor which
resulted in a leg injury.
Diagram 3.2 shows a broken egg when it is dropped from a certain height.

Diagram 3.1 Diagram 3.2

(a) What is the type of motion of the egg and the student while moving in the
air.

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

(b) Based on Figures 5.1 and 5.2 name one physical quantity that causes injury to
the student and breaks the egg.

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

(c) Suggest a method that would have :
(i) reduced injury to the student’s leg.

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

(ii) prevented the egg from breaking.

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

(d) Explain why the methods you suggested in (c) (i) and (c) (ii) can help avoid leg
injury and the broken egg.

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

(e) State the relationship between the answers in (b) and (d).

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

5

(f) Use the relationship in (e) to explain why a ball with a low air pressure does not
travel far when kicked.

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

4 Diagram 4.1 and Diagram 4.2 show two damps with different shape.


(a) Compare the pressure of water at point A and B in

(i) Diagram 4.1

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

(ii) Diagram 4.2

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

(b) (i) Based on the answers in (a)(i) and (a)(ii), which damp is better?

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

(ii) Explain the reason for your answer in (b)(i).

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

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

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

(c) The depth of water in the lake is 25 m and the density of the water is 1 000 kg m-3.
Calculate the pressure of the water at the bottom of the lake.

6

(d) Diagram 4.3 shows an apparatus is used to remove water from a beaker to a cylinder.
The volume of the water in the beaker is same as the volume of water in the cylinder.

Diagram 4.3

(i) Name the system for removing the water.

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

(ii) Mark the water level in the cylinder in Diagram 4.4 when the water stops to
flow if the water level in the beaker is at P.

Diagram 4.4

(iii) Explain your answer in b(ii).

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

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

(iv) By using the same apparatus, suggest one method to remove all the water into the
cylinder.

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

7

5 (a) Diagram 5.1 and Diagram 5.2 show the positions of two toy boats before and after a
stream of water from a hose is directed between the boats.


Using Diagram 5.1 and Diagram 5.2 compare the distance between two boats , the
motions of fluid and the force caused by the pressure of fluid between P and Q .
Relating the motion of the fluid and the pressure of the fluid. state a relationship
between the velocity of liquid and the pressure of liquid. Name the principle. Involved.

(b) Diagram 5.3 shows a hydraulic pump is used to raise car in a motor workshop.

Diagram 5.3

Using the appropriate physics concept, suggest and explain the modification required
to the above hydraulic pump to lift a large vehicle than the car.
In your explanation , emphasise the following aspects:
(i) the properties of the oil
(ii) the size of the pistons
(iii) the material of the base of the lift
(iv) the air compressor.

8

6 Diagram 6.1 and Diagram 6.2 show the situation of a fisherman boat a sea and in a
river.
The density of the sea water is higher than the density of sea water.


Based on the information and observation above:

(a) State one suitable inference.
(b) State one suitable hypothesis.
(c) With the use of apparatus such as wooden rod, beaker, Eureka can and other
apparatus, describe an experimental framework to investigate the hypothesis
stated in 6(b).
In your description , state clearly the following:

(i) Aim of the experiment

(ii) Variables in the experiment

(iii) List of apparatus and materials

(iv) Arrangement of the apparatus

(v) The procedure of the experiment which include the method of controlling the
manipulated variable and the method of measuring the responding variable.

(vi) Way you would tabulate the data

(vii) Way you would analyse the data

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07 jpnt fzk_f4_module4

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