Pd7Group4

1.  ** How do astronauts get oxygen to breathe in space ** ? Most of the oxygen the astronauts breath are created by electrolysis. Electrolysis is splitting water into hydrogen and oxygen gas. This takes electricity that is provided by the solar panels on the ISS. In the future it could be provided by plants inside the space station, so less solar panels would be used. By a machine in the Zvezda Service Module, that vents the CO2. Most of the other gasses are filtered through screens of charcoal. These gasses include acetone, methyl alcohol, and carbon monoxide.
 * __ media type="file" key="pd7grp4.wmv"Living in Space __**
 * 2.  **** How is carbon dioxide removed from the space station? **



**3. Explain how and why water is recycled in space? **   The reason for this is that there is **limited storage space** for water and there is **no continuous water supply.** water is produced when the fuel cells on board the Space Shuttle combine oxygen and hydrogen to make electricity.



**4. What do astronauts eat in space?** Astronauts can eat regular fruit as they can on space but for other foods such as spaghetti, macaroni and cheese, or beef stew they have to add water. Before they can eat they must heat up water and pour it into the dry-frozen food. But hot water floating around in space is very dangerous. The dry-frozen food bag has a small area where they can put they water in the bag without it floating all around. The bags are designed where the food won’t float out when opened and then astronaut can have a delicious hot meal. If you want to try some dry-frozen food, you can get it at camping stores. The best brand is Mountain House but there are many others.