METRIC MEASUREMENT

Only 3 countries in the world have NOT adopted the metric system as their official measurement system…

Who are they????

WHY METRICS?

It’s a standard based on the distance from the north pole to the equator, so it is available to everyone and will never change

Uses a base 10 for easy math! The prefixes are the same for all 3 units of

measure (length, mass, and volume)See the prefixes and their relationship here

MEASURING LENGTH OR DISTANCE

Base unit is the meter Use a metric ruler or meter stick 1 cm = 10 mm AND 1 mm = 0.1 cm

So… How long is this line? Answer in cm? In mm?

YOUR TURN1. Write the title “Measurement Practice” on a clean

page in your folder.2. Write a subheading “Length,” and number the paper

1-5 below the subheading.3. With a partner, use a ruler to measure the following

items:

1. Length of one floor tile2. Diameter of a penny3. Width of the fire blanket box (across the

front)4. Length of an unsharpened pencil5. Width of a small index card

MEASURING VOLUME

Volume is the amount of space something takes up

Liquid volume is measured in liters, where one liter is the amount of water in a box 1000 cm3

The tool used is a graduated cylinder

Read the volume of the liquid in the cylinder at eye level at the bottom of the meniscus

ALL GRADUATED CYLINDERS ARE NOT THE SAME!!!

You must determine the scale or value of the cylinder before finding the volume!

Α Β C

NOW, FIND THE VOLUME…

Α Β C

YOUR TURN

1. Write the subheading “Volume” under the 5 length measurements you recorded.

2. With a new partner, go to 5 of the graduated cylinders at the lab stations and find the volume of the liquid in the graduated cylinder.

3. Record the cylinder letter and the answer in your folder. Be sure to use correct units.

MEASURING MASS

Mass is the amount of matter that something is made of

The base unit is the gram, a gram is the mass of water with a volume of 1 cm3

The tool used to measure mass is the triple beam balance

FINDING MASS USING THE BALANCEFirst, zero the balance…

1. slide all the riders to the left2. use the adjustment screw to level the pointer

Then, mass the object…3. move the largest rider across notch by notch

until the pointer falls below zero, then move it back one notch

4. repeat this with the medium-sized rider5. slide the smallest rider across the beam until

the pointer is level6. sum the three riders to calculate the mass

FIND THE MASS…

YOUR TURN

1. Write the subheading “Mass” under the 5 volume measurements you recorded.

2. With a new partner, go to 3 of the triple-beam balances at the lab stations and find the mass of the object next to the balance.

3. Record the name of the object and the answer in your folder. Be sure to use correct units.

MEASURING TEMPERATURE

Temperature is measured in degrees Celsius 0° C is the freezing point of water and 100° C

is the boiling point of water

What does the thermometer read?

METRIC NOTES

Length The ____________ between two points Base unit is the ___________

Volume The amount of ___________ something takes up Base unit is the ____________

Mass The amount of __________ that something has Base unit is the ___________

Temperature The amount of __________ Base unit is the ____________ _____________

METRIC NOTES

Length The distance between two points Base unit is the meter

Volume The amount of space something takes up Base unit is the liter

Mass The amount of matter that something has Base unit is the gram

Temperature The amount of energy Base unit is the degree Celsius