What's the Frequency, Roy G. Biv? - NASA · 9....
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Team members: ________________________________________________________________________ Date: ____________ Class: ____________________________________________ What's the Frequency, Roy G. Biv? Lab Procedure Summary Today you are going to set up a lab to explore the relationship between wavelength and frequency of light. Procedure 1. • • Data Keeper / Reader: ______________________________________________ • Materials Manager / Checker: ______________________________________________ 2. 3. read all directions. adding Recorder machine should tape draw a and ver label tical line it "Start". about 20 cm from the beginning of the tape 100 cm from the off of the roll starting leaving point. about Draw 20 cm sp a vertical With the ace be l twe ine a metric ruler, en "End nd label it make "End". a point " and where Cut yo t u he cut. Time Keeper / Facilitator: ______________________________________________ Materials Manager retrieves all materials listed from teacher. Reader should Decide who will be the Data Keeper, the Materials Manager, and the Time Keeper. Record the roles below. Diagram showing how to label the tape.
Transcript of What's the Frequency, Roy G. Biv? - NASA · 9....
Team members: ________________________________________________________________________
Date: ____________ Class: ____________________________________________
What's the Frequency, Roy G. Biv? Lab Procedure
Summary
Today you are going to set up a lab to explore the relationship between wavelength and frequency of light.
Procedure
1.
•
•
Data Keeper / Reader: ______________________________________________
•
Materials Manager / Checker: ______________________________________________
2.
3.
read all directions.
addingRecorder
machineshould
tapedraw a
andverlabeltical line
it "Start".about 20 cm from the beginning of the
tape100 cm from the
off of the rollstartingleaving
point.about
Draw20 cm sp
a verticalWith the
ace beltweine ametric ruler,
en "Endnd label it
make"End".
a point
" and whereCutyotu he
cut.
Time Keeper / Facilitator: ______________________________________________
Materials Manager retrieves all materials listed from teacher. Reader should
Decide who will be the Data Keeper, the Materials Manager, and the TimeKeeper. Record the roles below.
Diagram showing how to label the tape.
Team members: ________________________________________________________________________
Date: ____________ Class: ____________________________________________
4. Nexcolored
t, Materials Manager draws three evenly spaced horizontal lines using
red, thepencilsmiddle line
to drawgreen
along and
thethe
tapebottom line
from Startviolet
to End.to represent
Make thethreetop line
Note
different colors in the spectrum of light.
everyone: The
focusedTime Keeper/
in orderOntoTaskcomplete
Coordinator
the completion of the tasks.this lab.
shouldHe or she
continuallymay also
keepshare in
5. greenRecorder
linedividesshould
thebe divided
red line every 14
marksevery 10 cm and
cm withthedarkvioletmarks
everyin red8 cm.
pencTheil. The
Note
wavelethatngth
yous of
makethe dif
onfertheent c
threeolors
colorof ligh
linest.
will represent the different
angstrom is: The true
angstroms, green10-‐wavelengths8 cm or
are actually measured
has a0.00000001wavelength of
cm.5770-‐4920Red has a wavelength
in terms of
andofangstroms.7800-‐violet
6220 An
wavelength oangstroms has a
relationship amongf 4550-‐3900
the visibleangstroms.
light wavesHowever,
will beinwhatthis lab,
is important.the simple
6.maskingMaterials
tape.Manager fastens the marked adding machine tape to a pencil using
7. theRecorder
centercutsof one
a manilaof the
folderlong
along its crease. Then cuts a rectangle out of
and 5 cm wide as shown below.sides. This rectangle should be about 10 cm high
Diagram showing the cutout on the manilafolder should look.
8. Materials Manager sets the manila folder with the cut out on the table,supporting it with the four books as shown in the diagram below. Now s/he
Team members: ________________________________________________________________________
Date: ____________ Class: ____________________________________________
feeds the end of the adding machine tape through the narrow space betweenthe manila folder and the two back books until "Start" appears in the middleof the opening in the manila folder.
Diagram showing the setup for this lab.
9. Recorder takes the Data Table and sits in front of the tape and manila foldermodel.
10. Time Keeper calls "start" and begin timing as he or she slowly pulls the tapealong. S/he should try to pull the tape at about the same speed for every trial!
11. Recorder tallies in the appropriate box on the data table every time s/he seesa wavelength mark. When "End" appears, s/he tells the Time Keeper to stop timing.
12. Each Triad makes one "trial run" and then repeats the procedure anadditional 3 times.
13. On the data table, Materials Manager determines and records the averagenumber of wavelengths observed for each color and the average time (inseconds) from start to finish.
14. Recorder determines and records the frequency for each of the colored light waves. Note: frequency is defined as the number of wavelengths passing agiven point per second.
