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## Measurment

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**Measurment**Mass, Length and volume**Have you measured anything today?**• Have you measured an object? • Have you measured an interval of time? • Have you measured the weight of an object? • How did you measure it?**Aims**• Looking at Assumptions • Revisit units of length, volume and mass • Investigate how we measure these units**Basic Quantities**• The unit of Length is the meter (m) • What are some multiples of this? • The unit of Area is meter squared (m2) • The unit of Volume is meters cubed (m3) • The unit of Mass is the kilogram (kg) • What are some multiples? • The unit of Time is seconds (s)**Measuring Objects**• Using prior knowledge take the most accurate measurements of the following • How can we be more accurate?**Human Reaction Time**• How do we measure time? • Reaction time concepts • Mental Processing time • Movement time • Device time • What are some instances where your reaction time can be very important? • How far does the ruler drop? • Did you improve with each try?**Pendulum**• http://phet.colorado.edu/sims/pendulum-lab/pendulum-lab_en.html