LIVE INTERACTIVE LEARNING @ YOUR DESKTOP September 27, 2010 NES:
Messenger: Cooling With Sunshades Presented by: Alicia Baturoni
Cortez Slide 2 Mercury Surface Space ENvironment, GEochemistry, and
Ranging Slide 3 Slide 4 MESSENGER
http://www.messenger-education.org/main/epo.php Slide 5
Inquiry-based, hands-on lessons for K-12 Slide 6 Aligned to
National Science Education Standards and Project 2061 Benchmarks
for Science Literacy. Slide 7 Inquiry-based, hands-on lessons for
K-12 Aligned to National Science Education Standards and Project
2061 Benchmarks for Science Literacy. Focus on Solar System
science, Solar System exploration through history, and the process
of designing, constructing, and sending a spacecraft to another
planet. Slide 8 Mercury Surface Space ENvironment, GEochemistry,
and Ranging Slide 9 High school teachers, what subject, do you
teach? Poll #2 A. Physics B. Chemistry C. Biology D. Earth/Space
Science E. General Science Slide 10 Slide 11 ePD Overview What does
this NASA lesson teach and where can I find it? Slide 12 ePD
Overview What does this NASA lesson teach and where can I find it?
What preparation is required for the lesson? Slide 13 ePD Overview
What does this NASA lesson teach and where can I find it? What
preparation is required for the lesson? How do I teach the concepts
and present the lesson? Introducing the lesson Performing the
experiment Analyzing the results Slide 14 ePD Overview What does
this NASA lesson teach and where can I find it? What preparation is
required for the lesson? How do I teach the concepts and present
the lesson? Introducing the lesson Performing the experiment
Analyzing the results Where can I get help when Im ready to
implement the lesson? Slide 15 Slide 16 Mercury Surface Space
ENvironment, GEochemistry, and Ranging Slide 17 Slide 18 Slide 19
Slide 20 Slide 21 Lesson Concepts Radiation from the Sun is the
main source of energy on Earth. It heats the Earth to a temperature
at which life is sustainable. Slide 22 Lesson Concepts Radiation
from the Sun is the main source of energy on Earth. It heats the
Earth to a temperature at which life is sustainable. Heat can be
transmitted via conduction, convection, and radiation. Slide 23
Lesson Concepts Radiation from the Sun is the main source of energy
on Earth. It heats the Earth to a temperature at which life is
sustainable. Heat can be transmitted via conduction, convection,
and radiation. Heat interacting with material causes it to change
temperature, size, or physical state (phase). Slide 24 Lesson
Concepts When designing a scientific experiment, it is important to
consider possible sources of errors and improve the basic design to
reduce these errors. Slide 25 Lesson Concepts When designing a
scientific experiment, it is important to consider possible sources
of errors and improve the basic design to reduce these errors. In
designing devices to be used in practical applications, it is
important to take into consideration the cost-effectiveness of the
device: the efficiency of the device in solving the problem
compared with its total cost. Slide 26 Lesson Concepts When
designing a scientific experiment, it is important to consider
possible sources of errors and improve the basic design to reduce
these errors. In designing devices to be used in practical
applications, it is important to take into consideration the
cost-effectiveness of the device: the efficiency of the device in
solving the problem compared with its total cost. Problems
involving heat flow and temperature changes can be solved using
known values of specific heat and latent heat of phase change.
Slide 27 A. There is at least one I teach. B. There are two I
teach. C. There are three or more standards listed that I teach. D.
I do not teach any of these standards. Do you teach any of these
standards? Slide 28 Lets pause for questions from the audience
Slide 29 Cooling with Sunshades 3-day physics lesson Grades 9-12
Slide 30 Slide 31 Slide 32 Slide 33 Slide 34 Cooling with Sunshades
3-day physics lesson Grades 9-12 Slide 35 Introduce the Mercury
MESSENGER mission Video and Information sheet Temperature in space
Assess Prior Knowledge Divide students into groups of 3 to design
and plan their sunshade. Slide 36 Slide 37 Wait to be prompted,
then answer the questions in the chat! 1.What year did the mission
launch? 2.When will it go into Mercurys orbit? 3.What does
MESSENGER Stand for? 4.How many years has it been since we last
visited Mercury? 5.What is the biggest problem with sending a
spacecraft to Mercury? 6.What questions is MESSENGER trying to
answer? Slide 38 Slide 39 Slide 40 Slide 41 TWO SPACECRAFT Slide 42
TWO SETS OF DELICATE INSTRUMENTS Slide 43 TWO SPACECRAFT TWO SETS
OF DELICATE INSTRUMENTS ONE GIANT FUSION REACTOR IN THE SKY Slide
44 TWO SPACECRAFT TWO SETS OF DELICATE INSTRUMENTS ONE GIANT FUSION
REACTOR IN THE SKY ONLY 1 THING TO PREVENT CATASTROPHE! Slide 45
TWO SPACECRAFT TWO SETS OF DELICATE INSTRUMENTS ONE GIANT FUSION
REACTOR IN THE SKY ONLY 1 THING TO PREVENT CATASTROPHE! Slide 46
Instrument fly-by http://messenger.jhuapl.edu/the_mission/mo
vies/IntrumentFlyBy.mpg http://messenger.jhuapl.edu/the_mission/mo
vies/IntrumentFlyBy.mpg Slide 47 INSULATION DEPOT Aluminum Foil
Bubble Wrap Air Pocket Filter Paper Mylar Can Lid Adhesive (tape)
Transparency Film Aluminum Foil Bubble Wrap Air Pocket Filter Paper
Mylar Can Lid Adhesive (tape) Transparency Film $ 0.20 $ 0.25 $
0.10 $ 0.03 $ 0.50 $ 0.15 $ 0.35 $ 0.05 $ 0.20 $ 0.25 $ 0.10 $ 0.03
$ 0.50 $ 0.15 $ 0.35 $ 0.05 Slide 48 Post other ideas for materials
in the chat! Slide 49 Slide 50 Lets pause for questions from the
audience Slide 51 Pass out Worksheet 2 and review procedure for
experiment. Students design their sunshades. Students follow
instructions 1-11, collecting data on page 3. Students work on
pages 5-7 while waiting for ice in control can to melt (~30
minutes). Slide 52 Where would your students perform the
investigation? A.In my classroom or lab with lamps. B.Outdoors C.I
dont have the resources to implement this lesson. Slide 53 Slide 54
Depending on the level of your class Basic Homework: Compare ice
melted in each can. How much ice was protected by your sunshade?
What percent of ice was protected by the shade / cost of the shade?
Complete p 5, questions 1-5. Slide 55 Depending on the level of
your class Advanced Homework: Complete calculations on page 4 using
data from the experiment. SHOW ALL YOUR WORK! In the next class you
will compare your answers with your group and among groups.
Complete p 5, questions 1-5 Slide 56 Students calculate: angle of
sun (trig) surface area (geom) latent heat (calc) energy/time
energy/time/surface area What do you mean by advanced? And must
confidently: convert SI units use Joules avoid careless errors
units, units, UNITS Slide 57 calculate angle of sun (trig)
calculate surface area (geom) calculate latent heat (calc)
calculate energy/time calculate energy/time/surface area Use a clip
art stamp on the skills your students would NOT be able to do:
Slide 58 convert SI units use Joules avoid careless errors be
consistent with units, units, UNITS Use a clip art stamp on the
skills your students WOULD be able to do: Slide 59 Compare amount
of ice melted in each can. How much ice was protected by your
sunshade? What percent of ice was protected by the shade / cost of
the shade? Slide 60 Mass of Ice Shade Can Beginning: 150g End: 80g
Difference: 70 g Control Can Beginning: 147g End: 50g Difference:
97g Slide 61 Control Shade Control 97g 70g 97g 27.85% x 100%
Efficiency Slide 62 Cost-Efficiency (%/$) Example sunshade: 2 foil
layers 2 transparencies 2 bubble wrap layers 2 filter papers 1 can
lid For a total of $0.88 Cost-Efficiency = 27.85% / $0.88 = 31.6%
per dollar spent Slide 63 COST-EFFICIENCY NASA engineers have to
meet budget constraints in their designs New model for NASA
engineers is to use off-the-shelf technology. 3M AF-11, 312
sleeving and 312 sewing thread, in Slide 64 Slide 65 Lesson Wrap
Up, pp 3-7 Experiment design and sources of error Heating curve of
water Passive vs active cooling Design improvements Link to
MESSENER Slide 66 Lets pause for questions from the audience Slide
67 Compare amount of ice melted in each can. How much ice was
protected by your sunshade? What percent of ice was protected by
the shade / cost of the shade? Slide 68 Ruler 36 cm Shadow 30.5 cm
o l o l Tangent = 30.5 cm/ 36 cm = arctan.847 = 40.27 o o l o l
Slide 69 Surface Area of Can Lid Known: 9.2 cm diameter 4.6 cm
radius =.046 m A = 3.14 (.046m) 2 A =.0066m 2 A =.007 m 2 Slide 70
Mass of Ice Shade Can Beginning: 150g End: 80g Difference: 70
g.07Kg Control Can Beginning: 147g End: 50g Difference: 97g.097Kg
Slide 71 Energy Used Shade Can Q = mL Q = m (334 kJ/kg) Q =.07 kg
(334 kJ/kg) Q = 23.38 kJ Control Can Q = mL Q = m (334 kJ/kg) Q
=.097Kg (334 kJ/kg) Q = 32.398 kJ Slide 72 Energy/Time Used (2400
seconds) Shade Can 23.38 kJ = 23,380 J 2,400 s = 9.74 J/s Control
Can 32.398 kJ = 32,398 J 2,400 s = 13.5 J/s Slide 73 Energy/s/Unit
Area (J/s/m 2 ) Shade Can 9.74 J/s.007 m 2 = 1,391.43 J/s/m 2
Control Can 13.5 J/s.007 m 2 = 1,928.57 J/s/m 2 == Slide 74
Energy/Time to calculate % of energy shade kept away Control Shade
Control 13.5 J/s 9.74 J/s 13.5 J/s 27.85% x 100% Slide 75
Cost-Efficiency (%/$) Example sunshade: 2 foil layers 2
transparencies 2 bubble wrap layers 2 filter papers 1 can lid For a
total of $0.88 Cost-Efficiency = 27.85% / $0.88 = 31.6% per dollar
spent Slide 76 COST-EFFICIENCY NASA engineers have to meet budget
constraints in their designs New model for NASA engineers is to use
off-the-shelf technology. 3M AF-11, 312 sleeving and 312 sewing
thread, in Slide 77 Slide 78 Lesson Wrap Up, pp 3-7 Experiment
design and sources of error Heating curve of water Passive vs
active cooling Design improvements Link to MESSENER Slide 79 Thank
you to the sponsor of tonight's Web Seminar: Slide 80
http://learningcenter.nsta.org Slide 81 http://www.elluminate.com
Slide 82 National Science Teachers Association Dr. Francis Q.
Eberle, Executive Director Zipporah Miller, Associate Executive
Director Conferences and Programs Al Byers, Assistant Executive
Director e-Learning LIVE INTERACTIVE LEARNING @ YOUR DESKTOP NSTA
Web Seminars Paul Tingler, Director Jeff Layman, Technical
Coordinator
