jabatan pelajaran perak-module solar 2 -experiment

Jabatan pelajaran perak

Module SOLAR-2/ 2(EXPERIMENT)

SCIENCE FORM 1,2 AND 3

NAME: ___________________________________________________

FORM:____________________________________________________

1

FORM 1

1. a) An experiment is carried out by a student.

FIGURE 1

i) Name apparatus X and Y.

X: = _________________________________________________________________

Y: = _________________________________________________________________

ii) State the method used in this experiment.

_________________________________________________________________________iii) What is the aim of this experiment?

iv) What is the volume of the stone?

_________________________________________________________________________v) What is the accuracy of volume obtained from this experiment?

_________________________________________________________________________

b) The table below shows the internal and external diameter readings for a test tube.

Measurement

Test tube

ReadingAverage

1 2

External Diameter (cm) 2.8 2.6

Internal Diameter (cm) 2.3 2.1

2

i) Find the average reading for external diameter and internal diameter of the test tube and fill in

the blank above.

ii) Calculate the thickness of the wall of the test tube.

2. A student carried out an experiment to study the relationship between the length of a pendulum and the time taken for the pendulum to make one complete swing. The apparatus set-up is shown in Figure 2

The procedures to carry out the experiment are as follows:

S 1 A pendulum bob is tied to a string and hung on a retort stand as shown in Figure 2

S 2 The time taken for the pendulum to make 10 complete swings is taken.S 3 The experiment is repeated with different lengths of the pendulum string.S 4 The results are tabulated in Table 1

(a) State the variables involved in this experiment.

Manipulated variable:

Responding variable:

Fixed variable:

3

Pendulum bob

One complete swing

FIGURE 2

Length of pendulum

(b) Table 1 shows the results of the experiment. Calculate the time taken for one complete swing and complete table 1

Length of the pendulum (cm)

Time taken for 10 complete swings (s)

Time taken for 1 complete swing (s)

10 8.0

20 10.0

30 12.0

40 14.0

50 16.0

60 18.0

TABLE 1

(c) Using Table 1.2, draw a line graph to show the relationship between the length of the pendulum and the time taken for one complete swing.

4

0.2

0.4

0.6

0.8

1.0

1.2

1.4

1.6

1.8

Tim

e ta

ken

for

one

osci

llat

ion

(s)

2.0

Length of pendulum (cm)

10 20 30 40 50 60 70

(d) Based on the graph, what can be said about the time taken for the pendulum to make one complete swing?

______________________________________________________________

(e) What can you infer from the experiment?

______________________________________________________________

(f) From the graph, predict the time taken for the pendulum to make one complete swing if the length of the pendulum is 70 cm.

______________________________________________________________

(g) State the relationship between the length of the pendulum and the time taken to make one complete swing.

______________________________________________________________

______________________________________________________________

3.

The above diagram shows two balloons which are filled with air and a cellophane tape which is pasted on balloon Q.

(a) (i)What will you observe from the above experiment after 1 hour?

(ii)Explain.

5

(b) What inference can you make from this experiment?

(a) (i)Will the volume of the mixture less than 100 ml?

(ii)Explain.

(b) What conclusion can you make from this experiment?

The above diagram shows the set up of an experiment.

(a) What kind of method of separation is used in the above experiment?

(b) What can you observe from this experiment? Explain.

(c) What conclusion can be made from this experiment?

6

4.

50 ml of water is poured into the measuring cylinder consists of 50 ml ethanol as shown in the above diagram.

5.

6.

The above diagram shows the set up of an experiment.

(a) What will you observe from the above experiment after 15 minutes?

(b) What conclusion can you make from this experiment?

7.

The diagram above shows a toy car. The spring in the toy car is wound up.

(a) State the form of energy in the spring

…………………………………………………………………………………………

(b) When the toy car is released on the floor, what happen to the car?

………………………………………………………………………………………

(c) What is the energy change in this situation?

……………………………………………………………………………………

7

8.

A ball is released from position X as shown in the above diagram.(a) What form of energy changes involved when the ball rolls down from

(i) X to Y?

…………………………………………………………………………………………

(ii) Y to Z?

…………………………………………………………………………………………(b) At which position will the ball possess the

(i) maximum potential energy?.

………………………………………………………………………………………(ii) maximum kinetic energy?

………………………………………………………………………………………….

(c) What will happen to the ball at position Z? Explain.

…………………………………………………………………………………………….

9.

The above figure shows the vision of a human.

(a) Name the type of vision.

(b) State the advantage of this type of vision.

(c) State three characteristics of the vision.

8

(d) (i) List two examples of animals with this vision.

(ii) Based on the answer in (d)(i), state the type of animals with this kind of vision.

10.

The above diagram shows a plant in a black box with an opening towards sunlight.

(a) What will happen a few days later?

(b) What inference can be made based on your answer in (a)?

(c) (i) Name the kind of response shown by the shoots towards sunlight.

(ii) Based on the answer in (c)(i), explain the importance of this response.

1 1

The above diagram shows an experiment to determine the physical characteristics of water. The water is being heated at the mouth of the test tube.

(a) What will happen to the ice cubes at the bottom of the test tube when the water boils?

(b) What inference can you make from this experiment?

9

(c) If foreign substances are added into pure water, what will happen to its

(i) boiling point?

(ii) freezing point?

1 2. (a) State three characteristics of a good drinking water.

(b) (i) What is water purification?

(ii) List three types of water purification methods.

(c) (i)

The above shows one of the water purification process. Name the process.

(ii) Give one disadvantage of this water purification method.

1 3.

The above diagram shows a graph of solubility of solutes P, Q and R against temperature.

(a) What is solubility?

(b) Based on the above graph,

10

(i) what happens at point S?

(ii) which solute has the lowest solubility at 15oC?

(iii) which solute has the highest solubility at 75oC?

(c) Give two factors beside temperature that affect the rate of dissolving a solute in a solvent?

14.

The above diagram shows some water is boiled in a metal tin. The tin is then sealed immediately and placed under cold running water.

(a) What will happen to the metal tin?

(b) Explain your answer in (a).

(c) Give two applications of air pressure in our daily life.

15.

(a) Based on the above diagram, what will happen to the balloon when air is pumped out of the bottle?

(b) Explain your answer in (a).

(c) Beside temperature, what will affect the air pressure in a covered container?

11

15.

The above diagram shows an insecticide-spraying pump.

(a) When the piston is pushed inwards, what will happen to the air pressure

(i) at point X?

(ii) at point Y?

(b) Explain what will happen to the liquid insecticide inside the container when the piston is pushed inwards.

16.

The above diagram shows a plank resting on a surface is pushed in the direction as shown.

(a) Draw the direction of the frictional force.

(b) (i) State two advantages of frictional force.

(ii) State one disadvantage of frictional force.

(c) State two ways to reduce friction.

17. (a) Define frictional force.

(b) (i) Does frictional force has magnitude and direction?

(ii) What determine the magnitude of frictional force?

12

(c) State one example of commercial application of frictional force.

19. A monkey with a mass of 20 kg climbed up a coconut tree with a height of 10 m in 20 seconds. (Take the force of gravity on kg 1 equal to N 10 )

(a) Calculate the work done by the monkey.

(b) Calculate the power developed by the monkey.

20.

The above figure shows a box with a mass of kg5 resting on a flat surface. A pulling force is steadily applied on the box from zero in the direction shown as above until it starts to move.

(a) What prevents the box from being moved until the force reached a certain value?

(b) (i) Given that the force applied on the box is N 5 and the box is moved for m 2 , calculate the work done.

(ii) Calculate the power generated if the work is completed in 5 seconds.

21. (a) State what a lever consists of.

(b) List all classes of lever and give an example for each of them.

(c)

State the class of lever the above object belongs to.

13

22.

The two children in the above diagram sit at an equal distance from the fulcrum.

(a) State the class of lever of the above object.

(b) Calculate the distance that the girl has to sit to make the seesaw balanced.

23.

(a) State the class of lever shown in the above diagram.

(b) Give one example of tool that uses the same class of lever.

24.

(a) (i) State the class of lever shown in the above diagram.

(ii) Calculate the weight of the load L.

(b) Give one example of tool that uses the same class of lever.

14

25. The figure below shows a model representing the human respiratory system.

(a) Name the parts labelled

X :

Y :

Z :

[3 marks]

(b) What will happen when Z is

(i) pushed upwards?

[1 mark](ii) pulled downwards?

[1 mark](iii) Explain what takes place in (b)(ii).

[2 marks]

(c) What breathing mechanisms in the human respiratory system are similar to the above processes?

[1 mark]

15

(a) Name gas X.

(b) Predict the results of this experiment after 20 minutes.

(c) Write down an equation in words for this reaction.

(d) Describe how slaked lime can be obtained from this experiment.

(e) Name three examples of natural calcium carbonate.1.

26. The below diagram shows an experiment to study the effect of heat on calcium carbonate.

16

27. The below diagram shows an experiment set up by a student.

(a) What is the aim of this experiment?

(b) State the purpose of using glass wool during the heating process.

(c) Name the fractions that can be obtained from this process.

1.

2.

(d) Suggest a relationship between the boiling point of the fraction and(i)(i) its viscosity.

(ii)(ii) its colour.

(iii)(iii) the amount of soot produced.

(e) Give one conclusion from this experiment?

MODULE SOLAR 2- EXPERIMENT

1.

28 The diagram shows an electric circuit with one cell at 1.5V.

(a) What is the reading of the ammeter in

(i) A1

[1 mark](ii) A2

[1 mark](iii) What is the relationship between A, A1 and A2?

[1 mark]

(b) What is the reading of voltmeter in

(i) V1

[1 mark](ii) V2

[1 mark](iii) What is the relationship between V, V1 and V2 ?

[1 mark]


(c) Calculate the total resistance in the circuit?

[1 mark]

29 The diagram below shows a set up for an experiment to study the relationship between current and voltage.

(a) State the variable of the experiment.

(i) Fixed variable

(ii) Manipulated variable

(iii) Responding variable

(b) What will happen if the switch is on?

(c) State the purpose of using the rheostat in the experiment.


(d) The reading of the voltmeter and ammeter is recorded as in the table below.

Voltage (V) Current (A)1 0.12 0.23 0.34 0.45 0.5

(i) Plot a graph of voltage against current.

(ii) From the graph, find the current if the voltage is 1.5V.

(iii) Suggest a relationship between voltage and current.

30. Figure 8.1 shows the apparatus set up for an experiment to the relationship between current and resistance. P is a 3 Ω resistor.


P

FIGURE 8.1The experiment is carried out as follow:

P1 Turn on the switch.P2 Record the reading of the ammeterP3 P is replaced by 5 Ω and 7 Ω resistor consequently.P4 The reading of the ammeter are recorded in table below.

Resistor P(Ω)

3 5 7

Current(A) Q 1.2 0.9

TABLE 8.2

a) The Figure below shows the reading of the ammeter when the circuit is connected to 3 Ω resistor.

FIGURE 8.3

Reading of Q=…………………….. A


Manipulated variable

Constant variable

Responding variable

ResistorSwitch

ii) Suggest the relationship between manipulated variable and responding variable.

…………………………………………………………………………………

……………………………………………………………………………………

c) Based on the experiment, what will happen to the current if the resistance is increased.

……………………………………………………………………………………………

……………………………………………………………………………………………

d) i) Plot a graph to show the relationship between the current and resistance based on Table 8.2

Resistance (Ω)

Current (A)

ii- Based on the graph, what will be the current if the resistance is 7.5 Ω.

…………………………………………………………………………………

e) The experiment is repeated but the voltage is increased to 9 V.The reading of the ammeter is recorded in Table 8.3.


Currents(I)

1.2 1.8

voltage(V)

6.0 9.0

Voltage/currents 5 5

Table 8.3

Based on Table 8.3, .

i) What can be concluded about voltage / current

………………………………………………………………………………

ii) What is the definition of Ohm’s Law.

…………………………………………………………………………………

…………………………………………………………………………………

31. Figure shows the apparatus set up for an experiment to the relationship between current and resistance.P is a 3 Ω resistor.

P


A

The experiment is carried out as follow:

P1 Turn on the switch.P2 Record the reading of the ammeterP3 P is replaced by 5 Ω and 7 Ω resistor consequently.P4 The reading of the ammeter are recorded in table below.

Resistor P(Ω)

3 5 7

Current(A) Q 1.2 0.9

b) The Figure below shows the reading of the ammeter when the circuit is connected to 3 Ω resistor.

Reading of Q=…………………….. A

b) i- State the factors that are involved in the experiment.


Manipulated variable

Constant variable

Responding variable

i- Suggest the relationship between manipulated variable and responding variable.

…………………………………………………………………………………………

………………………………………………………………………………………

c) Based on the experiment, what will happen to the current if the resistance is increased.

…………………………………………………………………………………………………

…………………………………………………………………………………………………

d) i- Plot a graph to show the relationship between the current and resistance based on Table 8.1

Resistance (Ω)

Current (A)

iii- Based on the graph, what will be the current if the resistance is 7.5 Ω.

…………………………………………………………………………………………

e) The experiment is repeated but the voltage is increased to 9 V.The reading of the ammeter is recorded in Table 8.3.

Table 8.3


Currents(I)

1.2 1.8

voltage(V)

6.0 9.0

Voltage/currents 5 5

i- Based on Table 8.3, what can be concluded about voltage/current.

…………………………………………………………………………………………

32. Figure 6.1 shows the distribution system of electrical supply. P,Q,R and S are transformers

11 kV 132 kV 66 kV 11 kV 11 kV

FIGURE 6.1

a) Based on Figure 6.1 , state two step-down transformers

…………………………………… and …………………………………………….

b) Draw the number of turns for primary coil and the number of turns for secondary coil respectively to show a step-up transformer on Figure 6.2

.

Input voltage Output voltage


Power station P Q R S

Divisional Substation

Heavy industry

Light industry

City Houses

FIGURE 6.2

c) In the electricity transmission and distribution system a step-up transformer is placed in the field zone. Give your reason.

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

d) A group of student carried out an experiment in which the number of turns in primary coil was kept constant while the number of turns in secondary coil was increased . The respective coil and output voltage are shown in table 6.3

Number of turns in secondary coil Output voltage

8 40

10 50

12 60

14 80

Table 6.3

i) Estimate the output voltage if the number of turns in secondary coil are 13

…………………………………………………………………………

ii) State the relationship between the number of turns in secondary coil and the output voltage

………………………………………………………………………...

………………………………………………………………………..e) Parts of electrical wiring system at home consists of circuit breaker , main switch ,

electrical meter and main fuse

Arrange the component of wiring system at home in correct sequence in Figure 6.4

Figure 6.4


main fuse

Circuit breaker

f) Ali watched Television from 8 p.m to 10.00 p.m t. After that he used computer for one hour. If television and computer have 100W power respectively, calculate the total cost for both appliances .( Cost for one unit is RM0.20)


jabatan pelajaran perak-module solar 2 -experiment

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