Visualizing the Metric System
Scientists all over the world use the International System of Units to measure: • Length• Volume• Mass• Density• Temperature• Time
What is length? • Length is the distance from one
point to another
The basic unit of length in the metric system is the meter.
The two units that measure the length of smaller objects are, …
• millimeter
• centimeter
A unit that measures the length of larger objects is….
• kilometers
A meter is about the height from the floor to the knob on a door.
A centimeter is about the width of your fingernail.
A millimeter is about the thickness of a dime.
1 kilometer is about the combined length of 9 football fields.
• Question: About how many centimeters is the width
of your paper?
Complete the Table Below
Prefix Meaning Unit of Length
milli
one-hundredth
meter
one-thousand
Complete the Table Below
Prefix Meaning Unit of Length
milli One-thousandth
one-hundredth
meter
one-thousand
Complete the Table Below
Prefix Meaning Unit of Length
milli One-thousandth
millimeter
one-hundredth
meter
one-thousand
Complete the Table Below
Prefix Meaning Unit of Length
milli One-thousandth
millimeter
centi one-hundredth
meter
one-thousand
Complete the Table Below
Prefix Meaning Unit of Length
milli One-thousandth
millimeter
centi one-hundredth centimeter
meter
one-thousand
Complete the Table Below
Prefix Meaning Unit of Length
milli One-thousandth
millimeter
centi one-hundredth centimeter
none meter
one-thousand
Complete the Table Below
Prefix Meaning Unit of Length
milli One-thousandth
millimeter
centi one-hundredth centimeter
none one meter
one-thousand
Complete the Table Below
Prefix Meaning Unit of Length
milli One-thousandth
millimeter
centi one-hundredth centimeter
none one meter
kilo one-thousand
Complete the Table Below
Prefix Meaning Unit of Length
milli One-thousandth
millimeter
centi one-hundredth centimeter
none one meter
kilo one-thousand kilometer
Length
Reading a metric ruler…..
The longer lines on the metric ruler are called… • centimeters
The shorter lines on the metric ruler are called…• millimeters
One centimeter is divided into how many millimeters? • 10
millimeters (mm)
Calculating: Measure the turtle in figure 2 from the rear of its shell to the tip of its nose. Record its length in both centimeters and millimeters. • 10.5 cm
• 105 mm
Volume
Volume
• The amount of space an object takes up
Volume
Volume of Liquids
When measuring the volume of a liquid, scientists use a unit known as the… • Liter (L).
To measure the volume of smaller liquids, the _________ is used. • Milliliter (mL)
Larger liquids are measured in kiloliters.
A liter is the size of a coke bottle.
1 milliliter equals 1/1000 of a liter…
In other words it would take about 1,000 die to fill up a liter bottle….
1,000 of these =
A kiloliter is equivalent to 8 large trash cans.
The instrument used to measure the volume of liquids is called the…
• Graduated cylinder.
This instrument has markings that are in increments of…• 1 milliliter (mL)
Common Conversions For Volume
1 L =
= 1,000 cm³
1 mL =
Common Conversions For Volume
1 L = 1,000 mL
= 1,000 cm³
1 mL =
Common Conversions For Volume
1 L = 1,000 mL
1 L = 1,000 cm³
1 mL =
Common Conversions For Volume
1 L = 1,000 mL
1 L = 1,000 cm³
1 mL = 1 cm³
The metric unit known for measuring solids with a larger volume is known as the… • Cubic meter (m³).
The formula for calculating the volume of a rectangular object is:
Volume = Length x Width x Height
Why is the unit cm³ used when calculating the volume of a rectangular object?
• When multiplying the object’s length, width and height, the cm units are also multiplied
cm x cm x cm = cm³
Suppose a cereal box is 10 centimeters long, 4 centimeters wide, and 20 centimeters high. What would be the volume of the box?
Volume = Length x Width x Height
Volume = 10 cm x 4 cm x 20 cm
Volume = 800 cm³
Mass
Mass• The measure of the amount of
matter an object contains
• Matter: The material that all objects and substances are made up of
• Anything that has mass and takes up space is matter
A balance is used to measure mass.
Pan Riders Beams Pointer
Mass
Units of Mass
The gram (g) is the basic metric unit of mass. Two
other metric units of mass are:milligram (mg)kilogram (kg)
A smaller object’s mass such as a paper clip would be measured in milligrams.
A gram is about the mass of a jelly bean
A kilogram is about the mass of a baseball bat.
Conversions
1 kg = g
1 g = mg
Conversions
1 kg = 1,000 g
1 g = mg
Conversions
1 kg = 1,000 g
1 g = 1,000 mg
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