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TEKNIK MENJAWAB FIZIK KERTAS 3 SPM

Pemarkahan Kertas 3

1)inference (1mark)
2)hypothesis (1mark)
3)Aim (1mark)
4)MANIPULATED+RESPONDING  variables (1mark)
5)FIXED variable (1mark)
6)COMPLETE list of apparatus and materials (1mark)
7)functional diagram of apparatus (1mark)
8)State how the manipulated variable is controlled (1mark)
9)State how the responding variable is measured (1mark)
10)State how the procedure is repeated to obtain at least 5 sets of results (1mark)
11)State how the data is tabulated (1mark)
12)State how the data is analysed (1mark)
TOTAL MARKS =12marks

Example Question
In the ocean, the water is often more calm. As the waves move towards the beach they become more distinct as shown by diagram 4.1. Study the shape and wave length shown in diagram 4.1.

Based on the information and the observation above:

(a)State one suitable inference
(manipulated) AFFECTS (responding)
depth AFFECTS wavelength   √

b)State one suitable hypothesis
(manipulated) increase, (responding)increase
OR
(manipulated) derease, (responding)decrease
OR
(manipulated) increase, (responding)decrease (and vice versa)

Depth increases, wavelength increases  √

(c)With the use of apparatus such as ripple tank, stroboscope and other suitable apparatus, describe an experiment framework to investigate the hypothesis stated in 4(b). In your description, state clearly the following :

(i) Aim of the experiment
you can take fron the question.For example :
In the ocean, the water is often more calm. As the waves move towards the beach they become more distinct as shown by diagram 4.1. Study the shape and wave length shown in diagram 4.1.
(ocean is more depth, beach is less depth. the question ask you to study wavelength also) 
To INVESTIGATE the RELAITIONSHIP between(manipulated) and (responding)
Answer :
To investigate the relationship between depth and wavelength  √

(ii) Variables in the experiment
Manipulated variable : depth, h
Responding variable : wavelength, Ī»  √
fixed variable: frequency  √

(iii) List of apparatus and materials.
D.c. power supply, ripple tank and accessories, lamp, metre rule, white paper, 5 pieces of perspecs/glass, stroboscope  √

(iv) Arrangement of the apparatus  √
Draw a functional diagram, use a ruler and pencil for this question.

(iv) The procedure of the experiment which includes the method of controlling the manipulated variable and the method of measuring the responding variable.
State how the manipulated variable is controlled
The current was switched on.
The put one piece of perspecs in the ripple tank
  √
State how the responding variable is measured
Mark the position of wave on the white paper as seen through the stroboscope
Measure the wavelength using metre rule
  √
The procedure was repeated for different depth by putting pieces of perspecs on top of the previous perspecs in the ripple tank 2,3,4 and 5 number of perspecs.  √

(v) The way you would tabulate the data
(manipulated variables)(responding variables)
1-
2-
3-
4-
5-

don`t forget to put unit.For example:  √
number of perspecsWavelength / cm
1-
2-
3-
4-
5-

(vi) The way you would analyse the data.
must draw graph but draw x-axis and y-axis
x-axis label manipulated variables
y-axis label responding varialbes  
√-