2.  Circle the items that you believe are matter: › Table › Air › Glass › Sound › Light › Sand  Write your own definition of what matter is.

4.  The standard system used around the world by scientists.  We refer to it as the International System of Units or SI.  It is based on a system of decimals.  It is used to measure length, mass, volume, density and temperature.

5.  Measured in grams  Mass measures the amount of matter in an object (BUT NOT THE WEIGHT!)  Measured using a triple beam balance

6.  NO!  The measure of gravitational pull on an object.  Measured in newton's using a spring scale.

7. Mass  The amount of matter in an object  Tool: triple beam balance  Unit: gram  Constant no matter where the object is located Weight  The amount of gravitational pull on an object  Tool: spring scale  Unit: newton  Varies depending on location

8.  As the mass rises so does weight  We use both to describe the heaviness of an object  On earth these go up and down together

9. MMeasured in Liters VVolume is the amount of space an object takes up 11 mL = 1cm 3

10.  We measure volume of irregular objects with a graduated cylinder.  This method is called water displacement  Liquids form a curved surface in graduated cylinders.  Take your reading at the low point of the curve or MENISCUS

11. Pour 7 ml of water in a graduated cylinder. If a rock causes the level to rise to 9 ml, the rock must have a volume of 2 ml.

12.  Circle the items that you believe are matter: › Table › Air › Glass › Sound › Light › Sand  Now lets fix that definition…

13.  Anything that has mass and volume.  What does that mean??

14.  Since the metric system is a decimal system, it is easy to convert between units.  There are several methods to use: › The stair step method › Decimal Hopping › Factor Label Method

15. KK ilo = 1000Super Sized HH ecta = 100Bigger DD eka = 10Big BBase Unit – Meter – Liter – Gram DD eci = 0.1Small CC enti = 0.01Smaller MM illi = 0.001Smallest RRemember: K ing H enry D ied B y D rinking C hocolate M ilk

16. Kilo - k 1000 units Hecto - h 100 units Deka - da 10 units Basic Unit (g, m, L) Deci - d 0.1 units Centi - c 0.01 units Milli - m 0.001 units To convert to a larger unit, move decimal point to the left or divide. To convert to a smaller unit, move decimal point to the right or multiply. 1.) 1000 mg = 1 g3.) 109 g = ____ kg 2.) 160 cm = 1600 mm4.)14 km = ____ m

17.  Once you master the stairs, decimal hopping should become easier. Since the metric system is set up by powers of ten all we have to do is move the decimal point to change units.  If you are moving to a LARGER unit move the decimal to the LEFT.  If you are moving to a SMALLER unit move the decimal to the RIGHT.

18.  13.4 cm = _____ m  45 kg = _____ g  62.304 kL = _____ mL  7.34 dm = _____ m  89,013 cg = _____ dag  100, 501 mL = _______ kL

19.  The distance from one point on an object to another  Measured in Meters  The smallest unit of length is the millimeter (mm). When would you use millimeters to measure length?  125 mm = ___ cm  Largest unit of length is Kilometer, what would you measure using the km?

20.  Measured in Celsius  Water freezes at 0˚C and boils at 100˚C

21.  The amount of mass in a given volume.  Density = mass/volume › g/mL  Which is more dense?

22.  If a cube has a mass of 155 grams and a volume of 25 mL, what is the density?  If a rock has a mass of 646 mg and a volume of 32 mL, what is the density?

23.  An objects resistance to change in motion › A change in motion could be moving something or slowing something down  Inertia is directly related to mass…the more massive something is the harder it will be to change its motion.

24.  Stop a football player or toddler running down the field  Move a cargo ship or a sailboat  Lift a full dresser or empty it out and then lift it  Slow down a single engine plane or a commercial airliner › It is harder to stop or move things that have greater mass or more inertia!

25.  Since the metric system is a decimal system, it is easy to convert between units.  There are several methods to use: › The stair step method › Decimal Hopping › Factor Label Method

26. KK ilo = 1000Super Sized HH ecta = 100Bigger DD eka = 10Big BBase Unit – Meter – Liter – Gram DD eci = 0.1Small CC enti = 0.01Smaller MM illi = 0.001Smallest RRemember: K ing H enry D ied B y D rinking C hocolate M ilk

27. Kilo - k 1000 units Hecto - h 100 units Deka - da 10 units Basic Unit (g, m, L) Deci - d 0.1 units Centi - c 0.01 units Milli - m 0.001 units To convert to a larger unit, move decimal point to the left or divide. To convert to a smaller unit, move decimal point to the right or multiply. 1.) 1000 mg = 1 g3.) 109 g = ____ kg 2.) 160 cm = 1600 mm4.)14 km = ____ m

28.  Once you master the stairs, decimal hopping should become easier. Since the metric system is set up by powers of ten all we have to do is move the decimal point to change units.  If you are moving to a LARGER unit move the decimal to the LEFT.  If you are moving to a SMALLER unit move the decimal to the RIGHT.

29.  Moving to a larger unit… › 33 m = ____ km 1 st place your decimal point › 33. m = ____ km 2 nd, how many places away is km from m? Larger moves LEFT. › 33. m = ____ km › 33. m =.033 km

30.  Moving to a smaller unit… › 67.2 dm = ____ mm 1 st the decimal is placed, we will start hopping from that point › 67.2 dm = ____ mm 2 nd, how many places is dm from mm? › 67.2 dm = ____ mm › 67.2 dm = 6720 mm

31.  460 L = ____ mL  90 cg = ____ kg  23.56 km = ____ hm  460 L = 460,000 mL  90 cg =.0009 kg  23.56 km = 235.6 hm

32.  Which SI unit would you probably use to express the height of your desk?  What would be the appropriate tool to use when measuring the mass of a spoon?  Ms. Gould is measuring small amounts of liquid chemicals out to be used in an experiment. Name the tool and SI unit that she is most likely using.

33.  Sometimes it is not as easy as moving the decimal.  For instance when converting from pounds to kilograms we cannot just move the decimal › for these conversion we use the factor label method.

34. Example: how many seconds are in 50 hours? Put the known quantity in the upper-left space: 50 hr

35.  Put the conversion factor in the next set of boxes to the right. Make sure that units match diagonally: › 50 hr60 min › ____1 hr

36.  Cross out, or cancel, the units that appear the same on both top and bottom: › 50 hr60 min › ____1 hr

37.  Now ask, “is the unit that’s not crossed out the one that I want?” › If the answer is “yes,” then continue to step 5 › If the answer is “no;” return to step 2 › 50 hr60 min 60 sec › ____1 hr 1 min

38.  To solve the problem, multiply the numbers on the top row. › 50 x 60 x 60 = 180,000  Then multiply the numbers on the bottom row › 1 x 1 x 1 › 50 hr60 min 60 sec › ____1 hr 1 min

39.  Now, divide the top row’s product by the bottom row’s product › 180,000 / 1 = 180,000 seconds

40.  Use the factor label method to determine how many inches are in 20 miles. › 12 in = 1 foot › 3 feet = 1 yard › 5, 280 feet = 1 mile