| Term | Definition |
|---|
| rocket | a device that expels gas in one direction to movie in the opposite direction |
| thrust | reaction force that propels an object forward |
| velocity | speed in a given direction |
| orbital velocity | velocity in a rocket must achieve to orbit |
| escape velocity | the velocity a rocket must reach to fly beyond a planet's gravitational pull |
| event that started the space race | When Sputnik 1 was sent into orbit, the US sent their own. |
| National Acronautics and Space Administration | What does NASA stand for? |
| Yuri Gargigan | The first human in space. |
| John Glenn | The first American to orbit Earth. |
| 1969 | What year did Apollo land on the moon? |
| 1961 | First human in space - year |
| 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 Probe | Has various scientific instruments that can collect data, including visual images, but has no human crew |
| Space station | A large artificial satellite on which people can live and work for long periods |
| rovers | Some probes have small robots called _______ that can move about on the surface of another planet or moon. |
| vacuum, temperature, microgravity | 3 conditions that are in space but not on earth |
| Geosynchronous orbit | A satellite orbits earth at the same rate as Earth rotates and thus stays over the same place on Earth at the same time. |
| Remote Sensing | The collection of the information about Earth and other objects in space without being in direct contact. |
| vacuum | a place that is empty of all matter. |
| microgravity | astronauts in orbit experience a feeling of weightlessness |
| space spinoff | an item that has uses on Earth but was originally designs for use in space |
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