In this unit, you will continue to measure lengths of various objects using measure units in the customary system and also the metric system. You will also learn temperatures in Fahrenheit degrees, and then temperatures in Celsius degrees.
Measure the Length
The chart below shows the customary units of length.
When completing the questions section, you may refer to the chart for reference. It would be wise to memorize this chart because you will use measurement for the rest of your life.
An inch is the standard unit used to measure length. When measuring with a ruler, line up the end of the ruler with the end of the object you are measuring.
A centimeter (cm) is the metric unit that is used to measure length.
Temperature Temperature can be measured in degrees Fahrenheit. Degrees is shortened to º and Fahrenheit is shortened to F. A warm sunny day is 85 º F or 85 degrees Fahrenheit. Look at the thermometer below to see some important temperatures.
There are two main temperature scales:
°F, the Fahrenheit Scale (used in the US), and
°C, the Celsius Scale (part of the Metric System, used in most other countries)
They both measure the same thing, temperature! But use different numbers:
Boiling water (at normal pressure) measures 100° in Celsius, but 212° in Fahrenheit
And as water freezes it measures 0° in Celsius, but 32° in Fahrenheit
