1. Unit D – Space Exploration
Lesson 4-5 (sec 2.2 and 2.3) Surviving There: Technologies for Living in Space
and Using Space Technology to Meet Human Needs on Earth

2. A. Hazards there is from the in space no protection atmosphere
outer space is called a which means there is no
“vacuum”
air, water or atmosphere
astronauts may be exposed to
cosmic and solar radiation
slide 1 of 7

3. meteoroids and extremes in temperature
exposed to
meteoroids and extremes in temperature
have to be brought along
air and food
stations and shuttles are which can cause
small and cramped
psychological problems
slide 2 of 7

4. B. Microgravity is the force of attraction between masses gravity
varies from
planet to planet
is the
small amount of gravity acting on astronauts
microgravity
are used to the
human bodies
gravity on Earth
slide 3 of 7

5. in orbit, astronauts experience which can: “weightlessness”1.
weaken muscles 2.
reduce depth perception 3.
bones lose calcium and become brittle 4.
heart muscle weakens since it doesn’t have to pump as hard
slide 4 of 7

6. C. Space Suits protect astronauts from space suits hazards in space
space suits contain: 1.
layers of different materials 2.
air, water 3.
heating and cooling devices 4.
waste tubes
slide 5 of 7

7. D. Water
water may be
filtered, purified and recycled many times during long space flights
International Space Station (ISS) will be recycling of its water, including
100%
urine
slide 6 of 7

8. E. Air oxygen is made by the electrolysis of recycled water
are removed from the air
CO2, dust and microbes
are all controlled
temperature, air pressure and humidity
slide 7 of 7

9. Using Space Technology to Meet Human Needs on Earth
2.3
Using Space Technology to Meet Human Needs on Earth

10. A. Communication depends on wireless technology
communication satellites
eg) cell phones, satellite TV, satellite radio
satellites today use
digital systems
slide 1 of 4

11. B. Research Satellites are designed to
stay in one position above the Earth
weather satellites
called
geosynchronous orbit
, like , are in
LANDSAT and RADARSAT
observation satellites
not
geosynchronous orbits
follow ships at sea, track forest fires, report on environmental change etc.
slide 2 of 4

12. C. Remote Sensing are in a low orbit (200 km – 1000 km altitude)
remote sensing satellites
can take of Earth’s surface or
photographs
collect data from sensing heat and radiation
slide 3 of 4

13. D. Global Positioning are in orbit around Earth
24 global positioning satellites 3
hand-held receiver picks up signal from of the satellites and gives the
precise location
slide 4 of 4

14. Assignment
Worksheet 6