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Measurement Tools

Measurement Tools. Measuring. When we measure you need to know: What you are measuring (the object) What you are measuring with (which tool) What you are measuring in (the units) If you don’t use units, I won’t know what you are talking about!. Length. What does it measure?

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Measurement Tools

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  1. Measurement Tools

  2. Measuring • When we measure you need to know: • What you are measuring (the object) • What you are measuring with (which tool) • What you are measuring in (the units) • If you don’t use units, I won’t know what you are talking about!

  3. Length • What does it measure? • Distance between two points • Can measure VERY tiny objects • Can measure great distances • What tools do we use? • Metric Ruler • Meter stick • What units do we use? • SI base unit is the meter

  4. TRY IT! • Use the ruler to measure the items at your lab station. Record your measurements on your notes. • Use the meter stick to measure the height of your desk.

  5. Volume • How much space an object takes up • Two ways to measure volume • Length x width x height • Only if it is square or rectangle • Volume by Immersion • Place the object into a beaker of water and subtract to find the volume.

  6. Volume • What tools do we use? • Rectangular objects • Ruler • Meter Stick • Irregular objects • Beaker (immersion) • What units do we use? • There are 3 units we use in this class • Meter cubed (m3) • Centimeter cubed (cm3) • Milliliters (mL)

  7. TRY IT! • Use the ruler to measure the length width and height of items at your lab station. Multiply the numbers to find the volume. Record your measurement on your notes. • Read the volume in the beaker • Practice immersion technique using the bead and the graduated cylinder

  8. Mass • Measures how much matter is in an object • Mass does not change when you change location • What tools do we use? • Triple Beam Balance • Pan Balance • Electronic Balance • What units do we use? • The SI unit for mass is kilogram

  9. TRY IT! • Use the balances at your station to measure each item • Triple beam balance to find the mass of the wooden block. • Pan balance to find the mass of the ball.

  10. Weight • Measures the amount of force (gravity) acting on an object • Your weight can change depending where you are • What tools do we use? • Spring Scale • What units do we use? • The SI unit for weight is Newton (N)

  11. TRY IT! • Use the spring scales at your station to: • Measure the weight of the wood block with this scale.

  12. Temperature • How hot or cold something is • Measures the kinetic energy (energy of motion) of an object. • What tools do we use? • Digital thermometer • Alcohol thermometer • What units do we use? • The SI unit for temperature is Kelvin • However, we use Celsius in class

  13. TRY IT! • Use the thermometers by the reading center to measure the following: • Record your measurements on your notes. • Digital thermometer: beaker of water • Alcohol thermometer: body temperature (hold it in your closed hand)

  14. Time • The interval between 2 events • Time can also measure rate • What tools do we use? • Stop watch • What units do we use? • The SI unit for time is seconds

  15. TRY IT! • Using the stop watch at your station, measure the following. Record your measurements on your notes. • How long it takes you to walk from the front of the room to the back of the room.

  16. Quick review • What are the 6 things we will measure in here? • Why is it important to use units when writing down measurements?

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