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Nativity- Space
Chapter 13 - Exploring Space
Question | Answer |
---|---|
rocket | is a device that expels in one direction to move in the oppsite direction |
thrust | the reaction force that propels a rocket forward |
velocity | is speed in a given direction |
orbital velocity | is the velocity a rocket must achieve to establish an orbit around Earth. |
escape velocity | is the velocity a rocket must reach to fly beyond a plant's gravtational pull. |
satellite | is an object that revolves around another object in space. |
space station | is a large artificial satellite on which people can live and work for long periods. |
space shuttle | is a spacecraft that can carry a crew into orbit,return to Earth, and then be reused for the same purpose. |
space probe | is a spacecraft that carries scientific instruments that can collect data, but has no human crew. |
rover | is a probe that is a small robot. |
vacuum | is a place that is empty of all matter. |
microgravity | is a feeling that you get when you are in orbit called weightlessness. |
space spinoff | is an item that has uses on Earth but was originally developed for the use in space. |
remote sensing | is a collection of information about earth and other objects in space without being in direct contact. |
geostationary orbit | is a satellite that orbits Earth above the equator at the same rate as Earth rotates and thus stays over the same place on earth al the time. |
How and where were rockets developed? | rocket tech. originated in china hundreds of years ago and gradually spread to other parts of the world |
How does a rocket work? | a rocket moves forward when gases shooting out the back of the rocket push it in the opposite direction |
Newton's ____________ law of motion demonstrates the motion of a rocket | 3rd; every force has an equal and opposite force or reaction |
three types of rocket fuel | solid, liquid, ions |
what is the main advantage of a multistage rocket? | the total weight of the rocket is greatly reduced as it rises |
What was the space race? | it began in 1957 when the soviets launched Sputnik I into orbit |
What does NASA stand for? | National Aeronautics and Space Administration |
1st human in space | Yuri Gagarin |
Who was Wernher von Braun? | he was a german scientist who designed the V2 rocket used during WWII; after the war he came to america and helped our space program accopmlish lift off |
1st American in space | Alan Shepard |
1st american to orbit | John Glenn |
What was the Apollo Program? | the american effort to land astronauts on the moon |
date of first moon landing and astronauts aboard | July 20, 1969; Neil Armstrong and Buzz Aldrin |
Where did the Eagle land on the moon? | Sea of Tranquility |
What did scientists learn from analyzing moon rocks? | some rocks are the same minerals as on Earth; able to calculate ages of the rocks so when different parts of the moon were formed |
roles of space shuttles | taking satellites into orbit, repairing satellites, and carrying astronauts and equiptment to and from space stations |
roles of space stations | probides a place where long term observations and experiments can be carried out in space |
common features in probes | power system, communication system, and scientific instruments to collect data and perform experiments |
conditions in space different from on earth | near vacuum, microgravity, and extreme temperatures |
examples of space spinoffs | velcro, bar codes, joysticks, cordless power tools, light weight metals... |
uses of satellites | communications and collecting weather data |
When was Sputnik I launched into orbit? | October 4, 1957 |