Fall 2010 Name_______________________

Physical
Science Lab

Metric
Measurement

**This page must be
completed before lab class or your grade on this lab will be lowered.**

Be sure to bring your
calculator to lab class. Read the entire
experiment before lab class. __You
cannot answer some of the questions on this page without reading the entire
experiment.__

1. Write the full word(s)
which name the unit of each symbol listed. (See pages 30-33 in your text [This
is in chapter 2 if you have the 10^{th} Edition of the text.]

g =______________________ cm
=______________________ mm =_____________________

kg =_______________________ s =______________________ km =____________________

2. Write the meaning
(number) of the following common metric prefixes. Use fractions where
necessary.

centi = _____________ milli = ___________ kilo =
________________

(You will need to memorize
these three for the first test)

Use the above to calculate
the number of mm in a cm. ___________________________

3. Use 2.54 cm/in and 2.21
lbs/kg to do the conversions below.

A blank is provided for you
to show all the intermediate steps in the solution, including the units. You must show this
step.

Example: 2 in=__2 in x 2.54 cm/in __=
__5.08 cm__

5 in=___5 in x 2.54 cm/in_______=____________cm 124 in = ____________ = __________cm

14 cm = ___________________
= __________ in 14 cm =
________________ = ___________ m

4 lbs = _________________ =
_________ kg 4 kg = _____________ =
___________ lbs

4km = _________________ =
__________ m 4 cm = _______________
= __________ mm

3.44 m = ____________ = __________
cm = ____________ = _________ in = ____ ft _______in

3 m = ____________ = __________
cm = ____________ = _________ in = _____ ft _____in

43 mm = _________________ =
__________ m 383 cm =
_________________ = ________ m

43 lbs = _________________
= _________ kg 53 kg =
_______________ = _________ lbs

33 km = _________________ =
_________ m 33 cm = _______________ = ________ mm

53 lbs = ________________ =
_________ kg 53 kg =
_______________ = ________ lbs

5 km = ________________= _________
m 355 mm = _______________ = _________ cm

You must read the rest of
the lab before answering these questions.

Name the object you are to
weigh first ________________________

What instrument will you
use to measure the dimensions of a cylinder? ____________________

Name one measurement you
will make regarding your body, besides your height?

The purpose of this
experiment is to give you experience in the use of the Metric system of units,
and its conversion factors. You will also learn how to use the Vernier
Calipers.

CLEARLY SHOW YOUR WORK FOR
ALL STEPS THAT INVOLVE CALCULATIONS. There are several places on this sheet
where you are asked to have the instructor sign. Failure to have him sign will have a very
detrimental effect on your grade! Ask for assistance from a person at our table
(or from the instructor) if you do not understand some instruction or result or
are having any type of difficulty.
Students are encourages to help one another but each person must make
their own measurements. Feel free to
speak with the instructor at any time.

On a balance, weigh __your__
calculator. Record the result below.
Convert it to kilograms.

Mass
=_________________ g =__________________ kg

When an extra blank is
given, it is for you to show the intermediate step.

(If you need assistance on this or any
other item, ask the instructor!)

2. Convert your answer to
pounds. (Use 2.21 lbs/kg) Show your
work!

(When you are asked to show
your work you are to write the numbers you are multiplying or dividing and show
their units. An example is “.176 kg x 2.21
lbs/kg =”)

__________lbs

Write what you think your
weight to be in pounds. ____________

Concert this to
kilograms. Clearly show all the steps in
the calculation.

_______________

Look at the meter stick.
What is the smallest distance between the marks on the inches side? ________

On the metric side?_____________

When you have reached this point have the
instructor sign here! ________________

Each person at your table
should use a different book for the following measurements but each person
should use the same book for all of their own measurements.

3. Measure the length of a
page of your book in inches.

Length =________ inches

4. Convert this measurement
to centimeters multiplying by 2.54 cm/in. (Show your work!)

___________cm

5. Measure the length of a
page of your book in centimeters

________ cm (nearest 1 mm)

6. Convert this to inches.
(Show your work!)

________in

7. Measure the width
of a page of your book in inches.

________in

8. Convert your answer
to cm. (Show your work!)

________cm

9. Measure the width of a
page of your book in centimeters.

________cm

10. Convert your answer to
inches. (Show your work!)

________in

11. Use the results of
measurements 3 and 7 to calculate the area of the page in square inches. (Area
= Length x Width)

_________in^{2}

12. Use the results of
measurements 5 and 9 to calculate the area in square centimeters.

(Area = Length x Width)

________cm^{2}

13. Calculate the square of (2.54 cm / in).

[2.54
cm /in]^{2} = ________________________

(Write the answer in the correct units)

This is the factor to use
when converting square inches to square centimeters. Multiply the answer from item 11 above by the
factor you obtained in step 13, to obtain the

area in square
centimeters = ______________

Now subtract this answer from that in step
12. _______________

If you made no mistakes,
this should be a small number compared to the answer to item 12. (If this is
not less than 20, ask the instructor for assistance.)

When you have finished to this point, have
the instructor sign here _______________

14. Use the Vernier
Calipers to measure the length (L) and the diameter (D) of one of the cylinders
on your table. (Each person should use a
different cylinder.) After you take the first measurement write the answer in
the blank below, put the calipers on the cylinder and call the instructor to
your table to confirm your reading. Have
the instructor sign when he has confirmed your two readings and you have
finished the volume calculation.

L=______________ D=____________________

15. Use the formula V=πD^{2}L/4
to calculate the volume of the cylinder.
π = 3.14 (show equation in space below)

V = Volume =__________cm^{3}

(Instructor)_______________________

Do the following in the
classroom; do not just write your height in the answer blanks. Be sure to use the centimeters side of the
meter stick on all measurements in this section.

17. With the help of your
group, measure your height in centimeters and then convert it to meters. Show your work in the space below.

_________________cm =
_____________m

18. Convert the answer from
step 17 to feet and inches as your height is normally given. (Give your answer
in the form 5 ft 10
in, etc.) Clearly show each step in the
calculation!

_________ft
and________in

19. With the help of your
lab group, measure your reach (finger- tip to finger-tip) in meters.

____________m

20. Convert the answer from
question step 19 to ft and in.

Clearly show each step
in the calculation!

_________ft_________in

Which was larger, your
height or your reach? _____________ By how many inches? ______

21 The tiles in the room
are 23 cm on each side. Begin at a tile where you can remember, then step off
10 normal paces, and count the tiles you have covered (to the nearest tile),
and do the arithmetic necessary to determine the length of your normal pace (one
step when you walk normally). First
calculate the total distance traveled (number of tiles x 23 cm) then divide by
10 to get the length of one of your steps. SHOW ALL THE STEPS IN YOUR
CALCULATIOIN. Record the results below.

Length of one pace
= ________m or _________ft and_______in

What are the advantages of
the metric system over the English system?

What are the advantages of
the English system over the metric system?

Do you think this
experiment was a good use of your time?
_______ If
the answer is yes explain why. If the
answer is no, tell how the experiment could be improved.