METRIC SYSTEM
METRIC SYSTEM

What is the metric
system?


A system used to
measure length, mass
volume and
temperature all over
the world.
It is used by scientists
even in the USA.
Length



How does one
measure length in the
metric system?
What instrument do
we use to measure
length?
What is the base unit
for length in the
metric system?



Using meters or
variations of a meter.
We use the meter
stick
The base unit is the
meter. There are
also smaller units
such as cm, mm, and
larger like km.
Volume
What is volume?
What is the base unit
for volume in the
metric system?

Volume is the amount
of space an object
takes up.
The base unit for
volume is the liter.
We can also use
milliliters (mL) in
science class.
VOLUME

How do you find the
volume of a regular
shaped object?




Multiply the length by
the width, and by the
height of the object.
Use cm3 as your units
of measurement.
1 cm3 is equal to 1mL
Example: 10cm x 5cm
x 3 cm = 150cm3
VOLUME


How do you find the
volume of an irregular
shaped object?

Use displacement
(displace water)
Steps (in mL)



1. Place a known
amount of water in a
beaker
2. Put the object in the
beaker and record how
much the water went
up.
3. Subtract the
original amount of
water from the new.
VOLUME

What instruments do
we use to measure
volume with?



The beaker
The graduated
cylinder
(most accurate)
The flask
Beaker, Graduated cylinder and
Flask
MASS

What is mass



Mass is the amount of
matter (stuff) in an
object.
The base unit for
mass in the metric
system is the gram.
We use the triple
beam balance to
measure mass.
Don’t confuse mass with weight

Mass is a
property of an
object and does
not depend on
the object’s
location.

Weight is a
measure of the
force of gravity
acting on an
object, and
therefore can vary
depending on the
object’s location.

For example, your body has the same
mass on Earth as it does on the moon, but
you weigh about six times more on Earth
than you would on the moon.
Temperature

What is
temperature?
 Measure
of the
average kinetic
energy of the
particles in a
substance.
Temperature
What is the base
unit for
temperature in
the metric
system?
What tool do we
use to measure
temperature?
 Degress
Celsius
 Thermometer
DENSITY



What is density?
What is the formula
for finding density?
What are the units for
finding density?



Density measures
how close together
the molecules of an
object are.
Take the mass and
divide it by the
volume. M/V
The units are g/mL
HOW TO FIND DENSITY

How would I find the
density of an apple?



1. Find the mass on
the triple beam
balance. (g)
2. Find the volume
using displacement.
(mL)
3. Divide the mass by
the volume. g/mL
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