Dimensional Analysis WS Conversion Factors: Fill in the blank for each conversion factor. 1 week = ________ days 1 pint = ________ cups 365 days = ________ years 1 mL = ________ cm3 4 quarts = ________ gallons 1 mile = ________ feet 2.54 centimeters = ________ inces 60 seconds = ________ minutes 12 inches = ________ foot 1 day = ________ hours 1 quart = ________ pints 1 cup = ________ tablespoons One Step Problems: Using the conversion factors above, make ratios to solve the following problems. Remember to stack the ration so the given units cancel and the desired unit is left. 20 ( ) = __________ 5 ( ) = __________ 272 ( ) = __________ 15 3 ( ) = __________ 1.6 ( 6 ℎ ( 39 ℎ ( ) = __________ 590 ( ) = __________ 400 ( ) = __________ 30 ( ) = __________ ) = _________ ) = __________ℎ Multiple Step Problems: a number can be multiplied by several conversion factors in a row to do a more complex conversion. Solve these problems and show all work. Start with the given number and be sure to cancel out all units until you get the desired units. How many seconds in 1 year? 1 ( )( )( )( ) = _________________ How many kilometers in 1 mile? (use knowledge of metric conversions too) 1 ( )( )( )( ) = _________________ If you have 2.0 days to complete an assignment, how many seconds is that? 2 ( )( )( ) = _________________ Now set the problems up without the parentheses given for each conversion. Again be sure to to cancel out all units until you get the desired unit. If an Oreo cookie is 0.654 cm thick (1 cookie = 0.654 cm), how many Oreos does it take to reach the moon if the moon is 3.84 x 108 m away from the Earth? (start with 3.84 x 108m) If a penny is 1.15 mm thick (1 penny = 1.15 mm), how many pennies are needed to reach the ceiling in a room where the height is 2.30 m? If I were to drive to Vancouver Canada from here, it is 2530 km. How far is it in mm? How about miles? How long in days would it take me to drive if I went an average speed of 90km/hr and drove 13 hours per day? (start with 5200 km hours days) A blacksmith has to put new shoes on a stable of horses. Each shoe requires 3 nails. How many nails must be brought to the stable if there are 20 horses? You need to adapt a cookie recipe for a family reunion. One recipe makes 2 dozen cookies, and it calls for 2 teaspoons (2 t) of baking soda. How many cups of baking soda will you need to make 60 dozen cookies? Report your answer to the nearest ¼ of a cup. (3 teaspoons (t) = 1 tablespoon (T); 16 T = 1 cup How many teaspoons of water are in 5.00 gallons?

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# Dimensional Analysis Activity