Comp. # __
Name
Date
Science 7/Period
All
Hemel
SURVIVING SPACE
Go to http://katy.edmodo.com and open the Surviving Space Powerpoint. If no luck, you can also go to
http://kisdwebs.katyisd.orq/campuses/CRJH/teacherweb/hhemel/Paqes/Welcome.aspx (my web page on CRJH
site ©) Look under "documents." You can read infa. and click on links to websites.
A. http:/ /www.nasa.qÿv /audience/ f ÿrstudents/5-8/ f eatures/what-is-a-spacewalk-58.h tml
1. What is a spacewalk?
Anytime an astronaut qets out of a space vehicle
2. What is another name for one? extravehicular activity (EVA)
3. Why are they necessary? Allow astronauts to work outside a spacecraft in space for thinqs such as
1. experiments and 2.repairs
4. From what do spacesuits protect spacewalkers? Extreme hot and cold temps., harmful space dust and
radiation
5. What do they provide for the astronaut? 1. oxygen to breathe 2. water to drink
3,pressure to keep fluids in the body in a liquid state
6. On spacewalks, tethers are used for what two things?
1. keep astronauts from floating away into space
2. keep tools from floating away while astronauts are working
7. SAFER stands for
Simplified Aid for EVA Rescue
8. For what is it used?
If an astronaut becomes untethered and floats away-this 'Jet pack"
would help the astronaut fly back to the spacecraft
B. http://www.nasa.qov/mov/196845main 069 ,Spacesuits.mov
1. What are the dangers in space?
1. no atmospheric pressure
2. no oxygen
3. intense radiation
4. extreme temperatures
2. What are the spacesuits called? l(EMU) Extra-vehicular Mobility Unit
,'ÿ '
3. What are 3 other conditions/factors in space that can have deadly consequences for unprotected
humans in space?
1. vacuum in space --pressure
2. temperature extremes (very hot or very cold)
3. micrometeoriods
C. http://www.nasa.qov/externalflash/nasa .spacesuit/
Watch intro. Then scroll over the spacesuits and click on the EMU. You will read about some of the more important
parts of the suits in the next 2 sections.
Helmet : Protects from ÿ and
Carries
oxyqen
sunliqht
and pushes humidity (water vapor)
in, which is for cooling
and
carbon dioxide into the suit. Click back...
Display and Control Module :
Where is it located? Front of the EMU
Allows the astronaut to control
and
communications
mirror
pressure
temperature
__s
ÿn the suit. The writing on it is
t
backwards
and the astronaut has a
on his wrist to help him/her read it.
D. http://www.nasa.qov/audience/foreducators/spacesuits/home/clickable suit.html
Layers : 14
layers to protect.
1-3 made up the
liquid coolinq and ventilation qarment
Next is the bladder layer that provides proper
Next layer keeps the bladder the right
prevents
tearinq
pressure
shape
Also holds in
oxyqen
for the astronaut. Then comes the ripstop liner which
. The next 7 layers insulate and make the suit act like a
thermos
by
keepinq the temperature from chanqinq
Outer layer is made of 3 fabrics which are waterproof
bullet-proof
, and
fire- resistant
PLSS--Primary Life support Subsystem : Provides many things need for survival.
Supplies oxygen
electrical power
and a
and removes
. It also contains
two-way radio
carbon dioxide
, contains a battery for
water-coolinq equipment
. It also contains a
caution _and
,
a fan to circulate oxygen
warninq
system that
alerts of problems with suit. ** Why are the EMU's white? 1. To reflect heat and
2. To stand out aqainst the blackness of space
*If time allows go to http://astroventure.arc.nasa.qov/DAP/index.html and Design a planet activity! © Good luck!