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Paper 3

Paper 3. Section B. Variables : Air pressure , Temperature. temperature. Manipulated : Responding : Constant :. Air pressure. Volume of air. inference. MV affects RV affects . temperature. air pressure. hypothesis. Temperature. When increases, , increases.

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Paper 3

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  1. Paper 3 Section B

  2. Variables : Air pressure , Temperature. temperature Manipulated : Responding : Constant : Air pressure Volume of air

  3. inference MV affects RV affects temperature air pressure

  4. hypothesis Temperature • When increases, , increases Air pressure

  5. aim To investigate the relationship between and temperature pressure

  6. Method of controlling manipulated variable • Manipulate variable : temperature control : the first temperature Heat up the water to 20 0C

  7. Method of measuring responding variable • Responding variable : pressure • Measure pressure using : Bourdon gauge Using Bourdon gauge , measure the pressure and record the data

  8. Analyse data Pressure / Nm-2 Temperature / K 20 30 40 50 60

  9. Graph Temperature / K Pressure / Nm-2

  10. variables length • Manipulated : • Responding : • Constant : resistance diameter

  11. inference • _ affects length resistance

  12. hypothesis • When increases, , increases length resistance

  13. aim To investigate the relationship between and length resistance

  14. Method of controlling manipulated variable • Manipulated variable : length Control : the first length : 15 cm Measure 15 cm length of wire and connect both end at point A and B

  15. Method of measuring responding variable • Responding variable : resistance • Measure potential difference using : voltmeter Measure potential difference using volmeter and calculate the resistance. Record data

  16. Analyse data Length / cm Resitance / Ω Potential difference / V 15 20 25 30 35

  17. Length cm Resistance Ω

  18. Cuba soalan muka surat 5

  19. pressure of water at a depth of 50 m under the sea is greater than the pressure at sea level. Pressure of this magnitude will crush human lungs and even ships unless they are protected by special equipment or made with special materials

  20. Variable • Depth, pressure • Manipulated variable : Depth • Responding variable : pressure • Constant : density

  21. Aim and hyphotesis • Aim : to investigate the relationship between depth and pressure • Hypothesis : when the depth increases, the pressure increases.

  22. Diagram 4.1 shows an electromagnetic lifting machine used to lift scrap metal. Diagram 4.2 shows the observation of the machine when the current flows through the machine is increased Diagram 4.1 shows an electromagnetic lifting machine used to lift scrap metal. Diagram 4.2 shows the observation of the machine when the current flows through the machine is increased Diagram 4.1 shows an electromagnetic lifting machine used to lift scrap metal. Diagram 4.2 shows the observation of the machine when the current flows through the machine is increased Diagram 4.1 shows an electromagnetic lifting machine used to lift scrap metal. Diagram 4.2 shows the observation of the machine when the current flows through the machine is increased Diagram 4.1 shows an electromagnetic lifting machine used to lift scrap metal. Diagram 4.2 shows the observation of the machine when the current flows through the machine is increased Diagram 4.1 shows an electromagnetic lifting machine used to lift scrap metal. Diagram 4.2 shows the observation of the machine when the current flows through the machine is increased.

  23. Variables • Current, magnetic strength • Manipulated : current • Responding : magnetic strength ( number of pin )

  24. variables • Manipulated : depth of water ( real depth) • Responding : position of image (apparent depth) • Constant : density of water

  25. Inference : Depth of water affect the position of image. Hypothesis : when real depth increases, the apparent depth increases.

  26. Aim : To investigate the relationship between depth of water ( real depth ) and position of image ( apparent depth)

  27. Apparatus and material : tall beaker, meter rule, pins, cork, water, retort stand

  28. procedure • Mention manipulated quantity : Real Depth : start experiment with what depth?? Fill the beaker with water to a height of 20 cm

  29. b) Method of measuring responding variable : apparent depth With meter rule, measure the apparent depth. Repeat experiment : Repeat experiment with different depth such as : 30 cm, 40 cm, 50 cm and 60 cm.

  30. Tabulate data

  31. Analyse data Apparent depth / d ( cm ) Real depth / D (cm)

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