1. Ch 1 Measurement
Science

2. Metric Measurement
The SI, or Metric, system has three base units of measure:
Length (distance) = meter (m)
Volume (space or size) = liter (L)
Mass (related to weight) = gram (g)
Prefixes are used before the words meter, liter, and gram to describe amounts of those measures as powers of ten.

3. Common Metric Prefixes
There are many prefixes but we limit ourselves to the most common:
kilo (k) = 1000
hecto (h) = 100
deka (da) = 10
base unit = meter (m), liter (L), gram (g)
deci (d) = 0.1
centi (c) = 0.01
milli (m) = 0.001
When using these prefixes they always attach before the base unit, like centimeter (cm), milliliter (mL), or dekagram (dag).

4. Converting Metric Measurements
Use this ladder diagram to
convert one metric unit to
another metric unit.
Find the start prefix on ladder
Move to end prefix on ladder
Note the steps and direction
Move original decimal point
the same steps and direction

5. Metric Mnemonic
A mnemonic is a silly memory phrase to remember something useful.
King Henry Doesn’t Usually Drink Chocolate Milk
Remember the first letters (K, H, D, U, D, C, M) in the right order.
Write the letters and then write the metric prefix for each letter.
kilo, hecto, deka, unit, deci, centi, milli

6. Metric Volume Volume = how much space something occupies
Liquid volume = liters (L) = large water bottle
Regular solid volume = m3 = box = Length x Width x Height
Length, Width & Height must have same units
Irregular solid volume = liters (L) = rock

7. Volume Calculations Find the volume of each box:
Length = 2m, Width = 5m, Height = 6m
Multiply 3m x 5m x 6m = 90m3
Length = 3mm, Width = 4mm, Height = 5mm
Multiply 3mm x 4mm x 5mm = 60mm3
Length = 8cm, Width = 9cm, Height = 10mm
Units are not the same so convert Height into cm first (10mm = 1cm)
Now multiply 8cm x 9cm x 1cm = 72cm3

8. Metric Density Density = Mass compared to volume for an object
Density = Mass ÷ Volume
Density of Water = 1g / mL
Anything with density > 1 will sink
Anything with density < 1 will float