ANSWERING TECHNIQUEPAPER 3

SECTION B

PLANNING EXPERIMENT

based on the simulation

experiments conducted in the lab (use the variable related to the experiment)

follow the step...

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IMPORTANT

OPERATIONAL DEFINITION

INERTIA: Time taken for one complete oscillation // Period

CLUE: difficult to start or stop

PRESSURE IN LIQUID: Different height in manometer

CLUE: ear pain // object crumple

VOLUME OF GAS: Length of mercury or sulphuric acid // Length of trapped air

STRENGTH OF ELECTROMAGNET: Number of pins attracted CLUE: louder// more scrap metals attracted

SPEED OF ROTATION: Height of magnet bar released

BRIGHTER: Current flow

CLUE: bulb light up

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EXPERIMENT BASED ON INSTRUMENT:

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TRIAL SBP 2019Diagram 3.1 shows a trishaw wallah paddling with a passenger. Diagram 3.2 shows the same trishaw wallah paddling two passengers. He noticed that the trishaw can move faster, when paddling a passenger.

Diagram 3.1 Diagram 3.2With the use of apparatus such as trolley, ticker timer and other suitable apparatus, describe one experiment.... CLUE:

1. passenger ➡ mass (MV) 2. move faster ➡ acceleration (RV) 3. CV: forceEXPERIMENT:

ticker tape F = ma

INFERENCE: acceleration of the trishaw depends on number of the passenger

HYPOTHESIS: mass increase, acceleration decrease

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IDENTIFY VARIABLE

TRIAL PAHANG SET B 2019Adam is watching a fish in the lake with different depth. Diagram 3.1 shows the image of fish in the deep lake while Diagram 3.2 shows the image of fish in the shallow lake.

With the use of apparatus such as tall beaker, pins and other suitable apparatus, describe one experiment....

CLUE: 1. deep ➡ real depth (MV) 2. position image of fish ➡ apparent depth (RV) 3. CV: refractive index // density of liquid

EXPERIMENT: real & apparent depth

INFERENCE: height of image fish depends on depth of lake

HYPOTHESIS: real depth increase, apparent depth increase

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IDENTIFY VARIABLE

Diagram 3.1 Diagram 3.2

TRIAL KELANTAN 2014Diagram 4.1 shows a bicycle dynamo which has a magnet and a coil of insulated copper wire. The output of the dynamo is connected to a bicycle lamp. The lamp will light up when the magnet is rotated by turning the wheel. Diagram 4.2 shows the light gets brighter when the wheel turns faster.With the use of apparatus such as a bar magnet, a coil of copper wire and other s u i t a b l e a p p a r a t u s , d e s c r i b e o n e experiment....

CLUE: 1. dynamo ➡ electromagnetic induction 2. turning the wheel ➡ speed increase

(height of magnet bar released) (MV) 3. Bulb light up ➡ induced current (RV) 4. CV: no. of turn of coil // no. of bar

magnet

EXPERIMENT: electromagnetic induction

INFERENCE: brightness of the bulb depends on the speed of wheel

HYPOTHESIS: height of magnet bar released increase, induced current increase

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IDENTIFY VARIABLE

Diagram 4.1 Diagram 4.2

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EXAMPLE

LET'S TRY

LET'S TRYCLUE: 1. motor ➡ magnetic force 2. current ➡ (MV) 3. spinning faster ➡ higher force (RV) 4. force ➡ distance of copper rod move 5. CV: distance between magnet bar// no. of

magnet barEXPERIMENT: magnetic force

INFERENCE: speed// spinning of blade depends on the current

HYPOTHESIS: current increase, distance of copper rod move increase

LET'S TRY

VARIABLE: MV: current RV: distance of copper rod move CV: distance between magnet bar// no. of magnet bar

EXPERIMENT: magnetic force INFERENCE: speed// spinning of blade depends on the current

HYPOTHESIS: current increase, distance of copper rod move increaseAIM: To investigate the relationship between current and distance of copper rod move

LET'S TRY

PROCEDURE: 1. Adjust the rheostat, so the current flow is 0.5 A as shown on the diagram

above. 2. Observe and record the distance of the copper rod by using meter rule. 3. Repeat the experiment by adjust the rheostat for a difference current which

are 1.0 A, 1.5 A, 2.0 A and 2.5 A.

LET'S TRYPROCEDURE: 1. Adjust the rheostat, so the current flow is 0.5 A as shown on the diagram

above. 2. Observe and record the distance of the copper rod by using meter rule. 3. Repeat the experiment by adjust the rheostat for a difference current which

are 1.0 A, 1.5 A, 2.0 A and 2.5 A.

ANALYSE PAPER 3

SPM

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