September 6 th and 9 th

When we multiply one unit by another, we leave a short _____________ b/w unit symbols. When we divide one unit by another, we use an _____________ ________ or a negative index.

Example 1 Density is defined as mass per unit volume. Write the SI unit for density Example 2 A Newton is defined as the force which accelerates a mass of 1 kilogram at the rate of 1 meter per second per second. Write down the combination of SI units which defines a Newton.

Smaller or larger multiples of these units are obtained by combining the base unit with a prefix chosen from a progression of powers of 10. Most commonly…

When stating the value of measurement, the prefix chosen should give the value as a number between 0.1 and 1,000

One nautical mile is written as km (kilometers) ---NOT meters This is OVER 1,000

The SI does not allow the use of other units. Imperial units of measurement, as used in the U.S. for example, are NOT acceptable in the international system.

Example 4 Convert 3540 millimeters into meters Example 5 Convert 258 inches into centimeters

Example 6 Convert 15 knots into kilometers per hour Example 7 Convert 54 kWh into MJ

Example 9Example 10

Convert 4 hours and 12 minutes into seconds

Example 11 Example 12

When we take measurements we are usually reading some sort of scale. When we measure the length of an object, it is likely to fall between two divisions. So when we estimate our answer to the nearest millimeter, we may be inaccurate by up to half a millimeter.

Examples

One in HEIGHT, WEIGHT, TEMPERATURE, and CAPACITY Each group member should be represented on the poster with ALL calculations for EACH

Find your height in… Inches Feet Centimeters Meters Find your weight in… Ounces Pounds Grams Kilograms

Find the temperature of these items in F and C… Water Boiling Point Freezing Point Human Body Temperature Dog Body Temperature Temperature of the NC ocean water Temperature outside today Find the capacity of the 4 items in… Milliliter Liter Quart Gallon

Edition 2 pg. 74 # 1-8 Pg. 69 # 1-6 pg #3-7 Edition 1 pg. 40 #2-7 pg # 1-6 pg #4-8 DUE IN TWO CLASS PERIODS!!