>>>>>>>>>CQ#6 PARTICIPANTS

Thabet Peter Al Fishawi  Cairo, Egypt
Mr. Vaillancourt's  Grade 6 class at Espirito Santo School, Fall River, MA
Sara Tremeear, Grade 6, Durkee Elementary School, theeter@kusd.kusd.edu
Tonya Evans, Grade 6, Durkee Elementary School, theeter@kusd.kusd.edu
Cathy Peterson, 5th Grade Class
Charlotte Stevens, 8th grade teacher, Taylor Road Middle School,
Alpharetta, Georgia USA
Mr.Grott's 6th Grade Class, Alden Place Elementary School, Millbrook, New
York
Josh Venters, 12th Grade Chemistry, Gilpin County School, Black Hawk,
Colorado
Edward Beidas  Proviso East H.S. EnergyNet Team,
ILL.
Mr. McCollum's 7th & 8th Grade Science, Charleston Jr. High School,
Charleston, IL

>>>>>>>>>CQ#6 BEST ANSWERS

Two entrants had the **best** answers --

Thabet Peter Al Fishawi -- High School Student, Cairo, Egypt

                and

Tim McCollum's 8th Grade Class -- Charleston, Illinois

and an "Honorable Mention":  Elementary Class --Cathy Peterson's
Class for giving a rather difficult question a lot of thought!




>>>>>>>>>>PARTICIPANT'S ANSWERS

Thabet Peter Al Fishawi 
Subject: Challange Question

MGS will take longer time than MPF although it is launched
before because it will take a flight path which is called Type 2
trajectory, which will take the S/C more than 180 degrees around the
sun, and it is much slower than other paths because the S/C will be
travelling at a slower velocity and that is because to use less
propellant to get captured by the planet's gravity.  While MPF will
follow a quicker path because it is not going brake in order to go into
orbit, but it will land without going into orbit. It is going to arrive
on the 4th of July in all ways because it will follow a kind of a
straight path so it won't get delayed because its upper stage can be
fired longer to speed up its velocity.


Thabet  Al Fishawi
------------------------
FROM:  ess@ici.net

Subject: Challenge Ques -Getting to mars
Cc: FWEV79A@PRODIGY.COM

Below please find answers to the last challenge question.  All answers are
from Mr. Vaillancourt's  Grade 6 class at Espirito Santo School  143
Everett Street  Fall River, MA 02723

Eric Brogan
-The MPF takes a shorter curve to Mars while the MGS takes a larger curve.
Also the MPF is lighter and the Delta rocket gets more speed.

Brian Hudon
-The MGP takes a shorter path and the MGS takes a longer path because it
cannot handle the stress.

Jennifer Novo
-There is a time when Mars are Earth are aligned and it will go straight
to the planet.

Amy Pavao
-The MPF takes a shorter way to Mars because Mars is closer to the Earth
at that time.

Jason Martin
-The MGS is following the planet Mars while the MPF is taking a direct
route to the planet.

--------------

"Terry E. Heeter" 
Organization: Durkee Elementary School
Subject: CHALLENGE QUESTION

There are two paths leading to Mars. A slower path and a faster path.
The faster path takes more energy to leave the Earth's atmosphere. The
MGS will take longer because they used the maximum lift capability of
the Delta Rocket. Also, MGS weighs more. The Pathfinder weighs less and
is taking the shorter path because of this.

Sara Tremeear
Grade 6
Durkee Elementary School
E-Mail:theeter@kusd.kusd.edu (School)

-------------

"Terry E. Heeter" 
Reply-To: theeter@kusd.kusd.edu
Organization: Durkee Elementary School
Subject: CHALLENGE QUESTION

I want to answer your question about the Mars Pathfinder. There are two
paths; one that is a slow path that takes a long time to get there and
the faster path that takes a shorter time to get there. The Mars
Pathfinder is taking the fast path and the Mars Globel Surveyor is
taking the slow path because it is too heavy to go fast. Before they can
be launched it has to be 18 months for Earth and Mars can be facing each
other.


Tonya Evans
Grade 6
Durkee Elementary School
E-Mail:  theeter@kusd.kusd.edu (School)
--------------

Cathy Peterson 

Subject: Challenge Question #6
Cc: cpeterso@mail.valverde.edu

I think the MPH would reach Mars before the MGS because the launch
pad for the MPH is aimed more directly at Mars than the MGS launch
pad is.

Josie Soto

--------

Cathy Peterson 
Subject: CHALLENGE QUESTION #6
Cc: cpeterso@mail.valverde.edu

I think that the MGS has more problems getting there than the MPH,
and that is why the MGS will take longer to get to Mars.


Yamira Diaz

----------

Cathy Peterson 
Subject: CHALLENGE QUESTION #6
Cc: cpeterso@mail.valverde.edu

I think the MGS has more power in the rocket boosters than the
MPH, and that is why the MGS will get to Mars  sooner.

Jorge Flores

-----------

Cathy Peterson 

Subject: CHALLENGE QUESTION #6
Cc: cpeterso@mail.valverde.edu

I think the the MGS weighs less and it would take longer to get to
Mars because of the gravity.  And the MPH is heavier, so it wouldn't
take longer to get to Mars because of the gravity.

Joseph Gutierrez

---------------

Cathy Peterson 
Subject: Challenge Question #6
Cc: cpeterso@mail.valverde.edu

I think that the MGS is lighter than the MPH, so it just floats
to Mars while the MPH is heavier so it just makes a straight trip to
Mars when it is rocketed.

Desmond Clark

**Above answers  from Cathy Peterson's 5th Grade Students
----------------

Charlotte Stevens 
Subject: Re: Challenge Question W

This answer was written by Dave B, Caroline B. and Paul B. -

There is a window every 18 months for a certain amount of time when
Earth is closer to Mars.  They can use a certain time daily for the
liftoff. If it is delayed for more than  a week they use a shorter
arc...and increase the velocity...with the third stage rocket on the
Pathfinder.

Charlotte Stevens
8th grade teacher
Taylor Road Middle School
Alpharetta, Georgia USA

------------------

Dave Grott 
Subject: Challenge Question #6

Pathfinder will arrive on Mars before Global Surveyor because it is
lighter and takes less fuel to launch.  It will have fuel left
over so it can accelerate or decelerate on its way to Mars.
Because it can do that, it can arrive at an exact date.

Surveyor is heavier and uses all its fuel just to launch.
It will have no fuel left and will 'coast' to Mars.  Because
it is coasting and will have no fuel to accelerate or decelerate
it will take longer to get there.  Once it gets there it will be
the first craft to use 'aerobraking' to go into orbit around a planet!

Mr.Grott's Class
Alden Place Elementary School
Millbrook, New York

'The ONLY Sixth Grade in the World to Answer all SIX Challenge
Questions!!!"

--------------------

Gilpin Library 
Reply-To: gilpin1@rmii.com
Organization: Gilpin County School RE-1

CC: zack@indra.com
Subject: CHALLENGE QUESTION

The orbit of Mars is an elipse coming closer to Earth during July than
during September. Scientists can predict the exact location of Mars
making it easier for the MPF to land. MGS on the other hand is father
away and can have an eleven-day fudge factor. MGS has to travel farther
than MPF therefore taking it longer. The distance to Mars during
September is so great that it may take a long time to get there. MPF has
a very direct line toward Mars therefore making it easier to predict a
date.

Josh Venters
12th Grade Chemistry
Gilpin County School
Black Hawk, Colorado

-----------------------------

Edward Beidas 
Organization: Proviso East H.S. EnergyNet Team
Subject: CHALLENGE QUESTION #6

The Mars Pathfinder will arrive on Mars earlier than the Global
Surveyor because of the orbits of the Earth and Mars will be closer, and
get closer, so the Pathfinder will intercept Mars earlier than the Global
Surveyor.  It will arrive on July 4 even though it has an uncertain
launch date because they know how long it is going to take.  They have to
wait until Earth and Mars are at a certain distance.

                                 FROM PROVISO EAST

-------------------------------
From: cxtdm@eiu.edu (Tim McCollum)
Subject: Challenge Question #6

Because of the weight of MGS and the maximum amount of propellant used in
the rocket, it takes a longer and slower path to Mars.  The lighter Mars
Pathfinder will travel a shorter path to Mars and will therefore arrive
earlier.  In order to arrive on the 4th of July, regardless of the launch
date within its launch window, engineers can simply alter the arc of the
path MP travels.

Mike Doty, Erik Hall, Nate Farber, Alison Spangler, Mike Schwenke, Ryan
Wallace, Andy Hunter, Stacy Tomshack, Micheal Shepherd, A.J. Sherry, John
Deeken, Leigh DeLude, Sean Cole, John Nay, Beth Edgington, Travis Rose,
and Christina Bushling

Mr. McCollum's 7th & 8th Grade Science
Charleston Jr. High School
Charleston, IL

---------------------------------