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F1 Science Notes

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Published in: Science
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Chapter 1 Introduction to Science Notes

Tan C / Kuching

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Qualification: Degree

Teaches: Mathematics, Physics, Science, Additional Math, Chemistry, Additional Maths

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  1. Il Page Learning Objectives: 1. Understand steps in scientific Investigation 2. Understand physical quantities and SI units 3. Understand prefixes A. Steps in Scientific Investigation 1st Identify a problem Determine what I want to find out 2nd Forming a hypothesis Making a smart guess( relationship between manipulated and responding variable) 3rd Planning the experiment Planning how to test the how to test the hypothesis 4th Controlling the variables Changing the conditions for an experiment 5th Carrying out an investigation An investigation is carried out as planned to test a hypothesis. When carying out an investigation, the following steps are necessary . (a) Collecting data (writing down what has been observed) (b)Analyzing and interpreting dataffinding a meaning for what was observed) (c) Making conclusions (whether hypothesis is accepted) 6th Reporting Writing a report on the investigation
  2. 2 Page Quick Check Stand Rubber Coa T h trad Bob Table Length of Time forlO complete oscillations (s) Average time for 1 com lete oscillation s endulum cm 80 60 40 20 (a) Complete the table 20 16 12 8 (b) What is your hypothesis for this experiment? (c) State the Manipulated variable: Responding variable: Constant variable: (d) What conclusion can be made from these results?
  3. 13 Page B. Physical Quantities and SI unit (International System of Units) 1. The table shows the physical quantities and International System of unit which used by the scientist around the world Ph sical uantities Len h Mass Time Tem erature Electric Current C. Symbols and Value of symbols used for prefixes SI unit Meter m Kilo ram k Second s Kelvin K Am ere A 1. Value in science are usually written in standard form (using the power of 10) in order to show a very big value or very small value. Prefix mega kilo deci centi milli micro nano Example Symbol k c n Actual value of the Value of symbol in symbol 1 000 000 1 000 0.1 0.01 0.001 0.000 001 0.000 000 001 standard form 106 103 101 102 103 10-6 10-9 1. Change the values of the physical quantities below to the standard form, and to prefix form (a) 5000g to kg (b) 0.0035 m to mm 2. Change the value in the prefix form to the standard form (a) 7.5 mm to m
  4. 4 Page (b) 9.7 um to m Quick Check 1. Change the value of the physical quantities below to a standard form and prefix value Value of physical quantity (a) 1 000 m (b) 3 000 000 m (c) 0.0055 kg (d) 0.000 0065 m (e) 0.04m (f) 0.000 009 kg Standard form Prefix value form

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