Transcript Measurement-A Common Language

Measurement-A
Common Language
Mass
Mass
 Mass
is the amount of matter an
object has
 Matter:
The material that all objects
are made up of
 What
is the difference between mass
and weight?
 Weight
is the amount of gravitational
pull on an object
The basic unit of mass is the…
 The
basic unit of mass is the gram.
Example: The weight of one sugar packet

US nickel weighs
about 5 grams

Some objects that are
measured in grams or gm
include:
* paper clips
* pencils
* erasers
Units smaller than gram
A
unit smaller than a gram is called?
Milligram
 One
gram is how many milligrams?
1000
 Medications
are measured in
milligrams or mg
Ex: 1 Ibuprofen tablet = 200 mg
Unit larger than a gram

Unit larger than gram is Kilogram or kg
1
kilogram is how many grams?
1000

One kilogram is little more
than 2 pounds (2.2 lbs.)
One pound bar bells
Problem
* If a paper clip is 10 grams, how
many will you need to have
1 kilogram of paperclips
1000 divide by 10 = 1000
10 =
100 paperclips
* Why use the number 1000?
Because, there are 1000 grams in
kilogram
What are some objects whose masses
can be measured in kilograms.
 Car
 Teacher’s
 Desk
 Can
Desk
Top Computer Coolest Car Ever
you think of other
objects?
Let’s think about this one!!!!

If one kilogram is 1000 grams and one gram is
1000 milligrams, how many milligrams in a
kilogram???

Hint: You will multiply

1000 x 1000 = 1,000,000 or 1 million

So, 1 kilogram = 1,000,000 milligrams

How much is 1 milligram?
About a pinch is salt
Measuring Mass



How do we measure mass?
We can use a scale
We can use a triple-beam
balance
Label the different parts of
the triple-beam balance.
Label the different parts of
the triple-beam balance.
Pan
Label the different parts of
the triple-beam balance.
Pan
Riders
Label the different parts of
the triple-beam balance.
Pan
Riders
Beams
Label the different parts of
the triple-beam balance.
Pan
Riders
Beams
Pointer
Volume
Volume of Liquids
Volume
 Volume
is the amount of matter and
space an object takes up
 Object
can be solid
Ex: Rock
 Object
can be liquid:
Ex: Juice
 Object
can be gas:
Ex: Air
The basic unit for volume of a
liquid, is the…………?

The Liter (L).

1000
One liter is……………Milliliters
Remember;
Milli = 1/1000 or
one-thousandth
To measure the volume of smaller
liquids, the _________ is used.

Milliliter (mL)

How many milliliters in one liter?
1000 Milliliters
Problem
 The
Coke bottle is 2 liters
How many milliliters is that?
2 x 1000 = 2,000 ml
Problem
 The
Minute Maid soda is
half a liter (1/2)
How many milliliters is that?
500 ml
The instrument used to measure the
volume of liquids is called the…
 Graduated
cylinder
Laboratory Equipment
 What
are these
called?
 Graduated Cylinders
 What do we measure
with graduated
cylinders?
 Volume
 Which metric units
are used to measure
Volume?
 Liters and milliliters
The
curve on the top
surface of water in the
graduated cylinder is called?
Meniscus
Observing- How do we measure volume?
 We
look at the Meniscus
 What
 The
is it?
curve on the top
surface of water
 How
much water is in this
Graduated Cylinder?
53 milliliters or 53 ml
Bonus:
Where did the cylinder graduate from?
Laboratory
Equipment

What is this equipment
called?

A Beaker

What is the Volume of
this Beaker?

250 milliliters or ml

What is Volume?

The amount of matter
and space as an object
takes up
Laboratory Equipment

Beakers come in assorted sizes:

10 ml

50 ml

100 ml

250 ml

500 ml

1000 ml

2000 ml

Which beaker is 2 liter or 2L?
2000 ml

Which beaker is .50 liter or .50L?

Which beaker is .10 liter or .10L?
500 ml
100 ml
REVIEW QUESTIONS
1.
What is weight?
Answer: The amount of gravitational pull on an object
2. What is Mass?
Answer: The measure of the amount of matter an
object has
3. What is the basic unit of Mass?
Answer: The gram or gm
4. What is the basic unit of Volume?
Answer: The liter or L
5. What can we use to measure volume?
Answer: Graduated Cylinder and the Beaker
6. How do we measure volume?
Answer: We use the Meniscus
7. What is the meniscus?
Answer: The curve on the top surface of water