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Chap.22
Exploring Space
| Question | Answer |
|---|---|
| electromagnetic spectrum | electromagnetic radiation arranged in order by their wavelength |
| refracting telescope | uses convex lenses |
| reflecting telescope | uses a curved mirror to direct light |
| oservatory | the building in which optical telescopes are housed |
| radio telescope | used to study radio waves traveling through space |
| rocket | engigines that have everything they need for flying |
| satellite | any object that revolves around another object |
| orbit | curved path a satellite takes as it revolves around an object |
| space probe | an instrument that gathers info and sends it back to earth |
| Project Mecury | first step to reach the moon that orbited a piloted spacecraft around earth and brought it back safley |
| Project Gemini | second step to reach the moon one astonaut team connected spacecrafts with another |
| Project Apollo | last step to reach the moon when neil armstrong was the first human to step on the moon |
| space shuttle | a reuseable spacecraft that transports astronauts, satellites, and other things to and from space |
| space station | large facility where people can live for a while in space |