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Metric System (SI) of measurement - 8th Grade

Metric basics!
by

William Begoyan

on 29 August 2018

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Transcript of Metric System (SI) of measurement - 8th Grade

Layering & Positioning
Unit
The International System
Measurement
Meter
Gram
A
measurement
is a value that tells the amount of something.
A measurement has a
quantity
and a
unit.
A
unit
is a fixed amount of something.
The cat is 15 inches long
The tiger is 8 feet long
Which one is longer?
The type of the unit makes a big difference here!
U.S.A
Liberia
Burma
Units allow people to communicate amounts.
To make sure their measurements are accurate, scientists use a set of standard units that have been agreed upon around the world.
The International System of Measurement is known as the S.I. (Systeme International), and the Metric measurement system.
System of 10's
The metric system is based on 10's
Every time you go up or down a level, you increase or decrease by a factor of 10.
Kilo (k)
1000 x base
Hecto (h) 100 x base
Deca (da) 10 x base
Base Unit (1x)
Meter
,
Gram
,
Liter
Deci (d)
1/10 base
Centi (c)
1/100 base
Milli (m)
1/1000 base
Divide Quantity by 10 or move the decimal left for each step up
Multiply Quantity by 10 or move the decimal right for each step down
In the metric system, you have base units (
Meter
,
Gram
,
Liter
), and prefixes (
Kilo, Hecto, Deca
,
Deci, Centi, Milli
)
Length
is a measurement of
distance
.
The
meter
is the metric unit for length.
What is a Measurement?
Questions
from me
to you
What is a Unit?
Metrics or SI is based on a system of ____?
What is length? And what is
the SI unit for length?
Liter
Volume
is a measurement of the amount of space something occupies.
The
liter
is the metric unit for volume liquids.
Measuring Liquids
The surface of a liquid forms a curve rather than a straight line.
That curve is called a meniscus.
If the meniscus curves downward, read the volume at the bottom of the curve.
Mass
is the measure of the amount of matter that makes up something.
The
gram
is the metric unit for mass.
Goes on page 7 in your ISN
AVID EQ: What is the benefit of using the Metric System?
Metric System
(SI)
of measurement.

Temperature
Temperature
is a measure of how hot or cold something is.

As particles move faster on average, the temperature goes up.

As particles move slower on average, the temperature goes down.

Celsius (C)
and
Kelvin (K)
are metric units for temperature.
K
= 273 +
C
C
= 5/9(
F
- 32)
F
=
C
x 9/5 + 32
Converting
temperature
Every substance that we are aware of freezes at this point.
-273 Degrees Celsius
0 Degrees Kelvin
Questions
from me
to you

What is volume? And what is the SI unit for volume?
What is a meniscus?
What is mass? And what is the SI unit for mass?
What is temperature? And what are the SI units for temperature?
The prefix centi(c) is _____ times larger than milli (m).
The prefix deca (da) is _____ times smaller than kilo(k).
By: Mr. Begoyan
Homework
-On page 6, write a paragraph (5-6 sentences each).
-Research why the initial metrication of the US in the 1970s did not work.
-Use pictures as necessary.
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