Units of Measurement

Base Units Length =_______________ Mass = _________________ Time = _________________ Temperature = ________________ Electric Current = ______________ Amount of Substance = __________

What Units do Scientists Use When Measuring Quantities? The International System (SI). Otherwise known as the Metric System. Why would scientists not use the English system (inches, feet, miles, pounds)? - It is not internationally universal.

What about other Base Units? Area? Use a derived unit… How do you find the area of a rectangle? A=l x w Length and width are each measured in meters. So if you multiply one meter by another meter, you will get meters squared.

Example of a Derived Unit. Area of a rectangle 5 meters (m) by 4 meters (m). A= 5m x 4m 5 x 4 = 20 m x m = m squared. A=20 square meters