Mr. Shepherd’s Physical Science Class Name:___________________ Class: ___________________ Chapter 1: _______________________________________________ Section 2: _______________________________________________ A _________________________________________ is an exact quantity that people agree to use for comparison. English Measurement System (U.S.A.): Milk _______________________________ Lumber_____________________________ Potatoes____________________________ Metric (Other Nations): Based on multiples of _____________ and developed in the late 1700’s. Milk→ _______________________________ Lumber→ ____________________________ Potatoes → ___________________________ In 1960, an improved version of the metric system was devised, known as the International _______________________________________________, abbreviated SI. SI Base Units: ________________________ are easy to use, because they are based on multiples of 10. The prefix kilo- means __________________________ 1 kilometer = ______________________________ meters 1 kilogram= _______________________________ grams The prefix deci- means “one-tenth” 1 decimeter = _______________________________ 1 decigram = ________________________________ Common SI Prefixes: Converting between SI Units: -_________________________________________ are used to change one unit to another. Ex. 1,000 mL = 1 L -A ________________________________________is a ratio that is equal to one. CF 1,000 mL = 1 1L To ________________________________, you multiply by the appropriate conversion factor. Example: Measuring Distance: -The SI unit of length is the ____________________________________, m. -The ________________ of the unit you measure with will depend on the ________________ of the object being measured. Example: Distance from home ________________________________ Length of a Pencil __________________________________ Measuring Volume: -The amount of space occupied by an object is called its __________________________. (Solids, liquids, and gases) -Volume = ________________________ X ____________________ X______________________ Measuring Matter: -_______________________________ is a measurement of the quantity of matter in an object. -A table-tennis (ping pong) ball and a golf ball have about the same ____________________. The golf ball has more _________________________________. Measuring Density: -Density= _________________________ ÷____________________________. - The measurement unit for density is _____________________________. - A unit obtained by combining different SI units is called a __________________________ unit. Time: -Time is the interval between 2 events. -The SI unit for time is the __________________________________________. Temperature: - For most scientific work, temperature is measured on the __________________________ scale. -The SI unit of temperature is the ________________________________________. -FREEZING POINT OF WATER: 0°C, 32°F, or 273K -BOILING POINT OF WATER: 100°C, 212°F, or 373K - Converting Fahrenheit to Celcius Formula: C = 5(F-32) 9
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