hey guys my name is a Aspen Evans I'm an
Oklahoma 4-H STEMist you're watching
mission to Mars a day one cars on Mars
hello space cadets
have you ever wondered how astronauts
get around in space with all the
different terrain and various altitudes
and unknown circumstances it can be
challenging however thanks to Rovers space surface exploration is a little easier
Rovers are kind of car like
spacecraft that NASA uses to explore the
surface of other planets so far rover's
have gone to mars and the moon maybe one
day they'll go even further
some are driven by astronauts others can be do by remote control
astronauts use Rovers to drive across
various terrain on different planets carrying
vital supplying and exploring new areas if
you wish to know the weather on Mars
currently before we embark on our adventure you can click the link below it will tell you everything you need to know
your mission if you choose to accept will require you to build a rubber band powered rover
that will travel across the surface of your room and mars
you will follow the engineering design process to design and build a rover
out of cardboard or whatever materials you have in your home figure out
how to use rubber bands to spin the wheels and improve their design based on your testing results
take a close look at this prototype of a rover like the one you are going to build prototypes are used all the time in engineering
they give us the basic design in which to build test and evaluate they improve a
design based on testing this is part of the engineering design process
some materials you may need to build your very own mars rover are cooking skewers
they can be found in kitchen isle in any walmart 
some popsicle sticks of various sizes rubber bands
duck tape straws various bottle caps tooth picks and if you have them laying around you can use connects or legos
to power my Mars rover I looped this rubber band
right here over an axle i created in the
front then I take the rubber band and thread it through to the back axle I use
the wheels to turn my rubber bands
and creates tension
when I'm ready to power my car forward I
simply release the wheels and it moves
remember space cadets this is your chance to be creative you're rover can be as complicated or as simple as you want
mine was made out of connects but yours can be made out of popsicle sticks like this
wouldn't be square or you can even make
it a triangle like this one these tooth
picks as your axle the possibility are out of this world
now its time to test your rover whined up the wheels  set it
down and let it go measure the distance
with a ruler or measuring tape did
everything work how did we make the rover
go farther engineers makes change and improve on their original design based on testing
this is called the design process try
redesigning the wheel setup or rubber band system
you can even redesigned the entire body to be more aerodynamic some questions to ask yourself are
what did you like about your rover, what could you change about your rover to make it travel further
should your rover be driven by an astronaut or maybe by remote control
for more information on how your rover drives on the surface of planets
you can go to youtube and type in mars in a minute how do rovers drive on the moon
or click the link located in the bottom of this video you can also go to 4h.okstate.edu
to find more information on todays lesson
you can answer all of my questions on a
Microsoft Office documents make sure to
film your experiment and put it on flip grid id love to see how your rovers move goodbye space cadets
