paper 3
DESCRIPTION
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. - PowerPoint PPT PresentationTRANSCRIPT
Paper 3
Section B
Variables : Air pressure , Temperature.Manipulated :Responding : Constant :
temperatureAir pressureVolume of air
inference
MV affects RV
affects temperatureair pressure
hypothesis• When increases, , increases
TemperatureAir pressure
aimTo investigate the relationship between
and temperaturepressure
Method of controlling manipulated variable
• Manipulate variable : temperaturecontrol : the first temperature
Heat up the water to 20 0C
Method of measuring responding variable
• Responding variable : pressure
• Measure pressure using : Bourdon gauge
Using Bourdon gauge , measure the pressure and record the data
Analyse data
Temperature / K Pressure / Nm-2
2030405060
Graph
Temperature / K
Pressure / Nm-2
variables
• Manipulated :
• Responding :
• Constant :
length
resistance
diameter
inference
• _ affects lengthresistance
hypothesis
• When increases, , increases
lengthresistance
aim
To investigate the relationship between
and
lengthresistance
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
• Responding variable : resistance
• Measure potential difference using :
Method of measuring responding variable
Measure potential difference using volmeter and calculate the resistance. Record data
voltmeter
Analyse dataLength / cm
Potential difference / V Resitance / Ω
1520
25
30
35
Length
Resistance
cm
Ω
Cuba soalan muka surat 5
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
Variable
• Depth, pressure
• Manipulated variable : Depth • Responding variable : pressure• Constant : density
• Aim : to investigate the relationship between depth and pressure
• Hypothesis : when the depth increases, the pressure increases.
Aim and hyphotesis
Diagram 4.1 shows an electromagnetic lifting machine used to lift scrap metal. Diagram4.2 shows the observation of the machine when the current flows through the machine isincreased
Diagram 4.1 shows an electromagnetic lifting machine used to lift scrap metal. Diagram4.2 shows the observation of the machine when the current flows through the machine isincreased
Diagram 4.1 shows an electromagnetic lifting machine used to lift scrap metal. Diagram4.2 shows the observation of the machine when the current flows through the machine isincreased
Diagram 4.1 shows an electromagnetic lifting machine used to lift scrap metal. Diagram4.2 shows the observation of the machine when the current flows through the machine isincreased
Diagram 4.1 shows an electromagnetic lifting machine used to lift scrap metal. Diagram4.2 shows the observation of the machine when the current flows through the machine isincreased
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.
Variables
• Current, magnetic strength
• Manipulated : current• Responding : magnetic
strength ( number of pin )
variables
• Manipulated : depth of water ( real depth)• Responding : position of image (apparent
depth)
• Constant : density of water
• Inference :Depth of water affect the position of image.
Hypothesis : when real depth increases, the apparent depth increases.
Aim :To investigate the relationship
between depth of water ( real depth ) and position of image ( apparent depth)
Apparatus and material :
tall beaker, meter rule, pins, cork, water, retort stand
procedure
a) Mention manipulated quantity :
Real Depth : start experiment with what depth?? Fill the beaker with water to a height of 20 cm
• 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.
Tabulate dataReal depth / D ( cm) Apparent depth / d (cm)
20
30405060
Analyse dataApparent depth / d ( cm )
Real depth / D (cm)
Constantant wire