identify 1. Start writting the report by identify the manipulated and responding variable. Inference 2. Inference : Cause and effect (of the manipulated.

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Presentation transcript:

identify 1. Start writting the report by identify the manipulated and responding variable. Inference 2. Inference : Cause and effect (of the manipulated and responding variable) Hypothesis 3. Hypothesis : ( manipulated variable ) Increase / Decrease, then ( responding variable ) increase / decrease Aim 4. Aim : To investigate the relationship between ( manipulated variable) and (responding variable).

Apparatus 5. Apparatus : Don’t Forget meter rule, stop watch etc Procedure 6. Procedure : Must mention manipulated quantity,must mention method of measuring responding variable. Tabulate 8. Tabulate data and analyse data : must UNITS include UNITS. Data 7. Data must have at least 5 set.

Diagram 4.1 shows Jason taking a shower on a very cold morning. After the water heater is switched on for a while, he still feels cold. Diagram 4.2 shows that Jason no longer feels cold after the temperature control knob on the heater is turned. Diagram 4.1 Diagram 4.2

MANIPULATED VARIABLES: THE ELECTRIC CURRENT RESPONDING VARIABLES: THE INCREASE IN TEMPERATURE CONSTANT VARIABLES: THE VOLUME OF THE WATER / TIME OF HEATING / LENGTH OF WIRE / DIAMETER OF WIRE (1 M) (2 M)

DEPENDS THE TEMPERATURE OF THE WATER DEPENDS ON THE ELECTRIC CURRENT AFFECT THE ELECTRIC CURRENT AFFECT THE TEMPERATURE OF THE WATER OR (3 M)

ELECTRIC CURRENT TEMPERATURE THE HIGHER THE ELECTRIC CURRENT, THE HIGHER THE TEMPERATURE OF THE WATER (4 M)

TO INVESTIGATE THE RELATIONSHIP THE ELECTRIC CURRENT THE TEMPERATURE OF THE WATER BETWEEN THE ELECTRIC CURRENT AND THE TEMPERATURE OF THE WATER (5 M)

BEAKER,AMMETER, THERMOMETER, IMMERSION HEATER, POWER PACK, CONNECTING WIRE, RHEOSTAT, WATER AND STOPWATCH (6 M)

BEAKER RHEOSTAT THERMOMETER IMMERSION HEATER WATER SWITCH AMMETER (7 M)

CONTROL AND MEASURE THE(MV) RECORD THE INITIAL TEMPERATURE OF THE WATER,θ 0 RECORD THE INITIAL TEMPERATURE OF THE WATER,θ SWITCH IS ON AND ADJUST THE RHEOSTAT UNTIL THE AMMETER READING, I = 0.2 A. (8 M)

HOW TO MEASURE THE (RV) RECORD THE FINAL TEMPERATURE, θF AFTER 5 MINUTES BY USING THE STOP WATCH. 22 REPEAT 33 REPEAT THE EXPERIMENT WITH DIFFERENT ELECTRIC CURRENT, 0.3 A, 0.4 A,0.5 A AND 0.6 A. (9 M) (10 M)

I/A INITIAL TEMPERATURE (Θ 0 / 0 C) FINAL TEMPERATURE (Θ f / 0 C) INCREASE IN TEMPERATURE (Θ / 0 C) INCREASE IN TEMPERATURE (11 M)

GRAPH I / A I / A ΘΘΘΘ Θ / 0 C Θ / 0 C