Unit E Space Exploration Lesson 4 8 Chapter

Unit E – Space Exploration Lesson 4 -8 – Chapter 4 topics 4. 1 - The Risks & Dangers of Space Exploration 4. 2 - Canadian Contributions to Space Exploration & Observation 4. 3 - Issues Related to Space Exploration

A. Accidents « 1967 – fire broke out during training on Apollo 1, 3 died « 1986 – space shuttle Challenger exploded on lift off, 7 died slide 1 of 5

« 2003 – space shuttle Columbia exploded on re-entry, 7 died «both Russians and Americans lost, Mars probes losing huge amounts of money and years of work slide 2 of 5

B. Dangers of Space Travel «risk of being hit by debris «risk of exposure to radiation in space «re-entry is very dangerous and must be perfect Ø too shallow an angle and the shuttle bounces off the atmosphere Ø too steep an angle and the shuttle burns up slide 3 of 5

C. Space Junk «large and small debris can fall off spacecraft or be left behind eg) dead satellites, paint «junk and micrometeoroids might be small but are traveling at enormous speeds (20, 000 km/h) and can have disastrous effects on a space shuttle or satellite slide 4 of 5

«most space junk burns up if it re-enters Earth’s atmosphere «some old satellites can re-enter and the pieces fall to Earth posing a risk slide 5 of 5

4. 2 Canadian Contributions to Space Exploration & Observation

A. Technology «Canada developed and built robotic arms for the space shuttle «called Canadarm 1 and Canadarm 2 «controlled by remote control slide 1 of 3

«used to launch and retrieve satellites, fix the Hubble Space Telescope and put together modules of the International Space Station «Canadarm 2 has computer-controlled fingers «provided technology for the Mars Pathfinder mission slide 2 of 3

B. Canadians in Space «Marc Garneau – 1 st Canadian in space in 1984 «Roberta Bondar – 1 st Canadian woman in space in 1992 «Chris Hadfield – 1 st Canadian to walk in space in 2001 slide 3 of 3

4. 3 Issues Related to Space Exploration

A. Should Space be Explored? «con – there are lots of issues on Earth that haven’t been resolved eg) poverty, hunger, pollution, disease «pro – space may offer some solutions to our problems slide 1 of 4

B. Resources in Space «there is a great demand for natural resources on Earth «resources in space may help us satisfy our energy needs «asteroids contain mineral resources eg) Fe, Au, Pt slide 2 of 4

«obtaining construction materials for space exploration from space would dramatically reduce the price «moon could provide materials for fuel «maybe could colonize other areas of the solar system, like Mars slide 3 of 4

C. Issues «political issues refer to ownership, rights and laws «ethical issues refer to fairness, right vs wrong, determining the beneficial uses «environmental issues refer to protection and conservation of space and Earth slide 4 of 4

Assignment n Worksheet 9