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Heat Conduction in Solids
A piece of iron heated at one end slowly warms at the other end. The rate of heat conduction determines how quickly the far end becomes hot. The term for rate of heat conduction is thermal conductivity.
In this lab, you determine how fast various materials conduct heat. The end of the rod is put in heated water (about 71°C). A liquid crystal strip tracks the rise of temperature along the rod. The liquid crystal changes color as the temperature changes.
The neck's calibrations show 0.1 ml per large calibration mark and 10 microliters (μl) for the smaller marks. Microliters are 1,000 times smaller than milliliters.Some analog measurements are listed below.
Length: meter stick
Mass: triple-beam balance
Force: spring scale
Volume: graduated cylinder
In this lab, you'll measure distance, mass, temperature, force, and volume.
Any measurement consists of two parts:
the value and
If you report a length as being 1.7, no one will know whether it's the size of a bacterium or a continent. Don't leave out the units.
Accuracy tells how good your measuring device is.
Does it measure correctly?
Precision is all about repeating measurements and getting the same value.
Try to measure the height of someone who won't stand still.