Unit E Section 2.2 Flashcards
What is space compared to?
Space is a vacuum, with no air or water
What hazards are there for the spacecraft and its occupants?
- damaging effects of cosmic rays
- solar radiation
- the risk of being hit by meteoroids
- Since there is no atmosphere, temperatures can be extremely cold or extremely hot
- No gases to breathe
- No proper pressure to keep the heartbeat going
How can the occupants have psychological problems?
They have to live in a confined space for months with the same eight people
What is gravity?
- gravity is the force of attraction between masses.
- On Earth, gravity gives us our feeling of weight.
What is Microgravity?
Microgravity is the condition in which the gravitational forces that act on mass are greatly reduced
Why would a person be 1/3 of their mass on mars?
That’s because on Mars the force of
gravity is weaker than on Earth.
How does living in outer space affect the body?
- Bones have much less pressure on them than normal and so they expand. (lack of calcium and more brittle)
- The heart does not have to pump as hard to circulate blood.
- Muscles weaken and mass starts shrinking (no walking or lifting)
- a person’s visual depth perception is affected
What helps with all the body problems in space
A lot of excersise
Why should the astronaut suit be flexible?
the suit must be flexible enough to allow the astronaut to grasp a wrench or twist a bolt
When going out of the space shuttle astronauts suits contain their:
air, water, a heating system, a cooling system portable toilet.
Why were the first astronauts connected to their spacecraft when getting out?
connected to their spacecraft with a hose that supply oxygen and a means of communication
What are the basic necessities an astronaut needs?
clean water, breathable air, comfortable temperatures air pressure life support food
What are the basic necessities an astronaut needs?
clean water, breathable air, comfortable temperatures air pressure life support food Recycling
What are the programs that are designed to ensure life support?
On the International Space Station, the Environmental Control and Life Support Systems
The functions of the life-support system include:
- recycling wastewater (including urine) to produce drinking water;
- using recycled water to produce oxygen;
- removing carbon dioxide from the air;
- filtering micro-organisms and dust from the air; and
- keeping the air pressure, temperature, and humidity (air moisture) stable.
