1.1, 1.2 & 1.3 - (Measuring length and volume) Flashcards
1) Measuring Length
Define measurement.
Measuring an object to make sure it is as precise as it can be.
Define calibration.
To make sure the standard way of measurement aligns with the equipment you need to measure with.
2) Measuring volume
Define miniscus.
The curved upper surface of the liquid.
Define parallax error.
To make sure the view the volume of a liquid at eye level (straight) and not to look to the sides (left and right) which produces parallax error.
3) Measuring volume by displacement
Define displacement.
It is known as the amount of water or liquid that has got displaced by the weight of the solid.
How do we measure small distances? What are their units?
We use a ruler. (cm, mm)
How do we measure large distances? What units are used?
Trundle wheel (meters)
What do we use to measure the volume of liquids?
Measuring cylinders.
What do we have to be careful about measuring volume in a measuring cylinder?
Measure from the bottom of the meniscus.
What can a measuring cylinder be used for?
Used to determine the density of irregular solids.
What do we use to measure time?
Stopwatches and stop clocks.
How do we find the thickness of stacked papers?
The thickness of sheets/No. of sheets = Thickness of one sheet
How do we measure time with
a pendulum?
Time is taken for 10 swings/ No. of swings = time for one swing
