Use an example to explain how the available tools can affect the precision of a measurement.

Measuring weight, that is, mass under gravity, is an obvious way to demonstrate how available tools can affect the precision of a measurement. If you had access to a bathroom scale, you would not effectively be able to measure 7 grams of yeast to make a loaf of bread, as the scale is not precise enough. It can, however, easily differentiate the weight of a 78-kilogram male and a 65-kilogram female. The scale is precise enough for higher masses, but not precise enough for the small amounts of yeast needed to make a good loaf of bread.

Jet streams are relatively narrow bands of strong wind in the upper levels of the atmosphere. the winds blow from west to east in jet streams but the flow often shifts to the north and south. jet streams follow the boundaries between hot and cold air. the earth's rotation is responsible for the jet stream as well.