Read at Eye Level Reading: all certain digits, plus one “uncertain” or estimated digit.
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Transcript of Read at Eye Level Reading: all certain digits, plus one “uncertain” or estimated digit.
Measurement
Commonalities to ALL Measurements
Read at Eye Level
Commonalities to ALL Measurements
Reading: all certain digits, plus one “uncertain” or estimated digit
Volume Measurements Use a graduated cylinder
- NOT a beaker or flask
Volume Measurements Measure at the bottom of the
curve of the meniscus.
How many places past decimal point on
the graduated cylinder?
1. A crescent or a crescent-shaped body.2. The convex or concave upper surface of a column of liquid, the curvature of which is caused by surface tension.3. Optics. a lens with a crescent-shaped section; a concavo-convex or convexo- concave lens.4. Anatomy. a disk of cartilage between the articulating ends of the bones in a joint.
Origin - 1685-1695 < Neo-Latin < Greek mēnískos crescent, diminutive of mḗnē moon
Meniscus – Definition & Origin
Length Measurements Meter Stick or Ruler
› Read all certain digits› Plus one “uncertain” or estimated digit
How many places past decimal point on the meter stick (when measuring in cm)?
Mass Measurements Triple Beam Balance
› Zero the balance before use
Mass Measurements Triple Beam Balance
› Zero the balance before use› Use weighing paper if needed› Add all three scales together
How many places past decimal point on the triple beam
balance?
Mass Measurements Electronic Balance
› Zero the balance before use› Use weighing paper
if needed› ALL numbers displayed
are recorded
How many places past decimal point on this
balance?
