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 m10 m

Length = 10m Width = 10m Height = 20m

(10m) X (10m) X (20m) = 2000m3

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.

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 g Common Conversions

Weight

Weight is: how much gravity pulls on you or on any other object, such as a planet.

Gravity changes from one place to anotherand thus so does your weight.

The more massive the object, the more it will pull on you...

AND THE HIGHER YOURWEIGHT WILL BE.

EARTH

MOON

150 Newtons25

Newtons

1/6 the gravity

You press down less on the scale.

Density = mass (g) volume (cm3)

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/cm3 d= 5g/cm3

LESS DENSE MORE DENSE

m= 10g m = 10gv = 10cm3 v = 2cm3

Density

Density = mass (g) volume (cm3)

FACTS ABOUT DENSITY MEASURMENTS:• Density is found by dividing a mass (g) or (kg) and a

volume (cm3) or (ml).• Units must also be divided: Example: g/cm3.

Mass = 20g Volume = 10cm3

= 2g/cm3

Density

Density = mass (g) volume (cm3)

• Given any two of these quantities (density, mass, or volume) you can find the other by either multiplying or dividing appropriately.

Density = 2g Volume = 10cm3

Mass = ?

(2g) x (10cm3)

m

d v

= 20g

Density Triangle