1. Unit Conversions Karan Patel

2. Different Units Units are measurements of things Examples Time (seconds) Distance (meters) Mass (kilograms) Force (pounds) There are several different types of units for each measurement

3. Converting Units Different countries use different units Converting between units is simple There are different formulas to convert to and from different units Scientists must be able to convert between any given unit with ease Still, it can become problematic for different countries to use different units Most countries use the metric system to measure things The United States still uses the imperial system for measurement Hopefully, the US will one day also switch over to the metric system

4. Problems with Different Units Having different standards for units causes problems Mars Climate Orbiter crashed in 1999 because scientists used different units Because some scientists used the metric system while others used the imperial system, a simple mistake caused an entire crash In order to prevent these kinds of mistakes, the SI unit system was made

5. International System of Units Throughout the world, students are now being taught to use SI units in science courses. It is based on the metric system, and all scientists today use it without problems. Learning the SI system also allows US students to become familiar with the metric system It is important for all countries to one day use a standardized system for measurement