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  5. Phsyics 2015 Content-led Approach
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Summary

Summary - Practical Skills
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  • Course
  • Practical Skills
  • Institution
  • PEARSON (PEARSON)

Comprehensive revision notes on Practical Skills from the Edexcel Physics A Level syllabus from an A* student in the 23/24 exam cycle. Complete with labelled diagrams and thoroughly fact checked and up to date.

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Document information

  • August 26, 2024
  • 5
  • 2023/2024
  • Summary

Subjects

  • practical skills
  • a level
  • physics
  • comprehensive
  • experimental
  • edexcel
  • illustrative
  • core practical
  • summary

Written for

  • A/AS Level
  • PEARSON (PEARSON)
  • Phsyics 2015 Content-led approach
  • Practical Skills
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Practical Skills

, · Genera Exam Ties
When the
question asks for advantage of changing usually
·
an an experimental technique it
of 'uncertainty reduced and leads
expects an answer : will be to more accurate
value for MP2.
Smaller % U does smaller
NOT always uncertainty
·



mean

·

Give answers to save number of signtig's as the data in the question
.




Critiquing recording of data
·




-
Row data should all be recorded the
to some number of decimal places
-


processed data should be recorded to the same number of significant
figures as the rodata it came from
-

Independent variable should be atleast 6 different values ofgood range
-

All row data should be recorded
All units should be recorded quantities
-


next to

Take repeats
-




To improve ACCURACY :


reduces
·


Doing repeats and taking an average only the effect of random error .

·


Controlling the control variables well
~

Ensure rulers are vertical and read at level in order to reduce perallax
eye
Measure
·
as large a value as possible to reduce %
Uncertainty
.

·
Check for zero error on legth measurement instruments

·

Draw graphs and obtain gradients
data logger instead of stopwatch reduces
Using light gate +
the effect of
-




human reaction time and lowers percentage uncertainty
Use fiducial markers to help count oscillations
·




·
measure over several intervals and divide by number of intervals to
reduce
percentage uncertainty
.

·

Using datalogger
a :


Allows for short time
more
readings in a
-




-

Increases sample rate

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