1. Metric
Measurements

2. It is important
that
measurements
be accurate &
easily
communicated
to other people

3. The scientific
system of
measurement
is called the
metric system

4. Scientists
Use metric
Units to
measure
length,
volume,
mass, weight,
density, & temperature.

5. Length: the basic unit of length in the metric system is the
meter.

6. To measure the length of an object smaller than a meter,
use the metric unit called
a centimeter.

7. There are
100 centimeters
in a meter.

8. To measure objects
smaller than a
centimeter, the
millimeter is used.

9. There are 1000
millimeters in
a meter.

10. 1 centimeter = 10 millimeters
Measuring Length
1 centimeter = 10 millimeters
How many millimeters are in 1 centimeter?
What is the length of the line in centimeters? _______cm
What is the length of the line in millimeters? _______mm
What is the length of the line to the nearest centimeter? ________cm
HINT: Round to the nearest centimeter – no decimals.

12. What is the length of your paper? _______
The width? __________
Your pinkie finger? _______________
Your length and width of your
science notebook? _______ _______
4. From your elbow to your wrist? ________

13. For larger measurements,
of distance, scientists use
the
kilometer.

14. There are
1000
meters in a
kilometer

15. To measure distances
in space, astronomer
use a unit
of distance
called the
light year.

16. A light year
is the distance
light travels
in a year.

17. A light year
Is about 9.5 trillion
(9,500,000,000,000,000)
Kilometers.

18. Volume is the amount of space an object takes up.
So remember, in science, volume is how much space something takes up, NOT how loud your music is
Volume
is the
amount
of space
an object
takes up.

19. In the
metric system,
the basic
unit of
volume
is the
liter.

20. To measure volumes
smaller than a liter,
scientists use the
milliliter.

21. Liters and milliliters
are used to measure
the volume of
liquids.

22. English vs. Metric Units
Which is larger?
A. 1 liter or 1 gallon
B. 1 liter or 1 quart
C. 1 milliliter or 1 fluid ounce
1 fl oz = ml
1 12-oz can of soda would equal approximately 355 ml.
1 gallon = 3.79 liters
It would take approximately 3 ¾ 1-liter bottles to equal a gallon.
1 quart = liters

23. Measuring Volume of liquids & Irregular Objects
We use graduated cylinders to find the volume of liquids and other objects.

24. What is the volume of water in the cylinder? _____mL
Read the measurement based on the bottom of the meniscus or curve. When using a real cylinder, make sure you are eye-level with the level of the water.
What is the volume of water in the cylinder? _____mL

25. What causes the meniscus?
A meniscus occurs when the molecules of the liquid attract those of the container. The glass attracts the water on the sides.

26. Measuring Liquid Volume
What is the volume of water in each cylinder?
Images created at A B C
Pay attention to the scales for each cylinder.

27. http://resources. edb. gov
We can measure the volume of irregular object using water displacement.
Amount of H2O with object = ______ About of H2O without object = ______ Subtract for Volume = ______

28. The metric unit
used to measure
the volume
of solids
is called the
cubic centimeter.

29. Measuring Solid Volume
We can measure the volume of regular object using the formula length x width x height.
10 cm
9 cm
8 cm
_____ X _____ X _____ = _____

30. Mass is the
measure
of the amount
of matter
in an object.

31. The basic unit
of mass
in the metric system
is the
gram.

32. To measure the mass
of large objects,
the kilogram is used.

33. A kilogram is
1000 grams.

34. English vs. Metric Units
1 pound = grams
Which is larger?
1. 1 Pound or 100 Grams
2. 1 Kilogram or 1 Pound
3. 1 Ounce or 1000 Milligrams
100 kilogram = 220 pounds
1 ounce of gold = 28,349.5 milligrams

35. Measuring Mass
We will be using triple-beam balances to find the mass of various objects.
The objects are placed on the scale and then you move the weights on the beams until you get the lines on the right-side of the scale to match up.

36. What would be the mass of the object measured in the picture?
Once you have balanced the scale, you add up the amounts on each beam to find the total mass.
What would be the mass of the object measured in the picture?
___ + ___ + ___ = ___ g