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Volume (square objects, like a box) Volume is the: amount of space something takes up. FACTS ABOUT VOLUME MEASURMENTS: Volume is found by multiplying three distances. Volume = (Length) x (Width) x (Height) Units are also multiplied and become “cubed” 3 20 m 10 m Length = 10m Width = 10m Height = 20m (10m) X (10m) X (20m) = 2000m 3

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Volume (liquid, like water in a cup) FACTS ABOUT LIQUID VOLUME MEASURMENTS: The unit for liquid volume is the Liter (L). Volume is found using a graduated cylinder. Units for small volumes are milliliters (ml). 0 20 30 40 50 1 L= 1000 mLCommon Conversions You should always read a graduated cylinder at the bottom of the curve of the liquid. That curve is called the meniscus.

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Mass Mass is the: amount of matter “stuff” something is made of. Mass will not change unless you add or take away matter. FACTS ABOUT MASS MEASURMENTS: The unit for mass is the gram (g). Large masses are measured in kilograms (kg). A triple beam balance (NOT A SCALE) is used to measure mass. 1 kg= 1000 gCommon Conversions

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Weight Weight is: how much gravity pulls on you or on any other object, such as a planet. Gravity changes from one place to another and thus so does your weight. The more massive the object, the more it will pull on you... AND THE HIGHER YOUR WEIGHT WILL BE. EARTH MOON 150 Newtons 25 Newtons 1/6 the gravity You press down less on the scale.

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Density = mass (g) volume (cm 3 ) Density Density is: how closely packed particles in a substance are. Said another way, Density is: the amount of matter (mass) in a given space (volume). d= 1g/cm 3 d= 5g/cm 3 LESS DENSE MORE DENSE m= 10g m = 10g v = 10cm 3 v = 2cm 3

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Density Density = mass (g) volume (cm 3 ) FACTS ABOUT DENSITY MEASURMENTS: Density is found by dividing a mass (g) or (kg) and a volume (cm 3 ) or (ml). Units must also be divided: Example: g/cm 3. Mass = 20g Volume = 10cm 3 = 2g/cm 3

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Density Density = mass (g) volume (cm 3 ) Given any two of these quantities (density, mass, or volume) you can find the other by either multiplying or dividing appropriately. Density = 2g Volume = 10cm 3 Mass = ? (2g) x (10cm 3 ) m d v = 20g Density Triangle

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