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Space
Term | Definition |
---|---|
rocket | It is a device that expels gas in one direction to move in the opposite direction. |
thrust | It is the reaction force that propels a rocket forward. |
velocity | It is the speed in a given direction. |
orbital velocity | It is the velocity a rocket must achieve to establish an orbit around earth. |
escape velocity | It is the velocity a rocket must reach to fly beyond a planet's gravitational pull. |
space shuttle | It is a spacecraft that can carry a crew into space, return to Earth, and then be reused for the same purpose. |
space station | It is a large, artificial satellite on which people can live and work for long periods. |
space probe | It is a spacecraft that carries scientific instruments that can collect data, but has no human crew. |
rover | It is a small robot that moves around the surface of a planet. |
vacuum | It is a place that is empty of all matter. |
microgravity | It is a feeling of weightlessness. |
space spinoff | It is an item that has uses on earth but was originally developed for use in space. |
remote sensing | It is the collection of information about Earth and other objects in space without being in direct contact. |
geosynchronous orbit | It is an orbit where a satellite orbits the Earth at the same rate as the Earth rotates and thus stays over the same place on Earth all the time. |
Where was rocket technology first developed? | China |
What makes a rocket move forward? | The gases shooting out of the back. |
What is the advantage of a multi-stage rocket? | The advantage is that it decreases weight as it moves forward requiring less energy to move the rocket. |
When did the space race begin? | 1957 |
What was the American effort to land astronauts on the moon called? | The Apollo program. |
What are satellites used for? | They are used for communication and collecting weather data and other scientific data. |