Measurement

1
Measurement

• The International System of Units (SI) is the
  standard system used around the world.

2
Length

• The standard SI unit to measure length is the
  meter (m).
• The meter is divided into 100 equal parts called
  centimeters (cm).
• The centimeter is divided into 10 equal parts
  called millimeters (mm).
• Long distances are measured in kilometers (km)
  which is 1,000 m.

3
Mass

• Mass is the amount of matter that something is
  made of.
• The kilogram is the SI unit to measure mass.
• Mass is measured with a triple balance beam.
• Unlike weight, mass does not change with an
  objects position.

4
Weight

• Weight is a measurement of the gravitational
  force on an object.
• The SI unit for force is the Newton (N).
• Since weight is a measure of gravitational force,
  it does matter where you are.
• There is 6 times less gravitational force on the
  moon, so you would weight 6 times less there.
• Use spring scales to measure weight.

5
Density

• Density is mass per unit volume.
• Density is the amount of matter it has in a given
  space.
• To find density (D), first measure the mass (m)
  and volume (V), then divide mass by volume.
• Density is an SI derived unit (mass and volume)

6
Volume

• Volume is the amount of space that something
  occupies.
• Volumes of liquids are expressed as liters (L).
• Graduated cylinders are used to measure liquid
  volume, and also to find the volume of a small
  odd shaped object. (see meniscus)
• Volumes of solid objects are expressed in cubic
  meters (cm3)

7
Measurement

• Area and Volume

• Area is the amount of surface included within a
  set of boundaries and is expressed in square such
  as square meters (m2).
• The amount of space occupied by an object is the
  objects volume.

• The basic SI unit of volume for a solid object is
  the cubic meter (m3).
• SI measurements for liquid volumes are in
  milliliters (mL) or liters (L).

8
Temperature

• Temperature is a measure of the average kinetic
  energy of the particles in an object.
• Temperature is not determined by how much of the
  substance you have.
• The SI unit for temperature is Kelvin (K),
  however the Celsius (C) scale is most commonly
  used.