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Chapter 2 Science
Term | Definition |
---|---|
rocket | a device that expels gas in one direction to move in the opposite direction |
Orbital velocity | the velocity a rocket must achieve to establish an orbit around Earth |
Escape velocity | the velocity a rocket must reach to fly beyond a planet's gravitational pull |
thrust | the reaction force that propels a rocket forward |
Velocity | the speed in a given direction |
satellite | an object that revolves around another object in space |
space shuttle | a spacecraft that can carry a crew into space, return to Earth, and then be reused for the same purpose |
space station | a large artificial satellite on which people can live and work for long periods |
space probe | a spacecraft that carries scientific instruments that can collect data, but has no human crew |
rover | small rovers that move around on a planets suface |
vacuum | a place that is empty of all matter |
microgravity | the feeling of being weightless astronauts get |
space spinoff | a item that has uses on Earth but was originally developed for use in space |
remote sensing | the collection of information about Earth and other objects in space without being in direct contact |
geosynchronous orbit | a satellite orbits Earth at the same rate that Earth turns so it stays |