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15 Cards in this Set
- Front
- Back
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1st satellite |
- sputnik - launched by the soviet union in 1957 |
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Early rockets |
- ancient Greeks made rocket-propelled objects using steam - ^ Archytas's "pigeon" is said to be thr first rocket ever recorded |
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What must happen in order to put an object into space |
The pull Earth's gravity must be overcomed |
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At what velocity can we escape earth's gravitational pull |
28 000 km/h |
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Ion drives |
- engines that use xenon gas instead of chemical fuels - xenon is accelerated and emitted as exhaust, causing the rocket to move in the opposite direction- weaker thrust than chemical fuel but lasts an extremely long time- there is no friction in space so the vehicle can go a long distance on very little fuel |
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MIR |
- a space station that operated in low earth orbit 1986 to 2001 - soviet Union |
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Parts of the modern rocket |
structure and mechanical parts – rocket body, fins, engines etc fuel – liquid oxygen and hydrogen, gasoline (makes up most of the mass) payload – crew cabin, crew, air, water etc.
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Solar sails |
- solar sails are thin sheets that will move when exposed to solar energy- the energy from photons from the sun is used to power the spacecraft and increase its speed |
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The fundamental law of physics |
For every action, there is an equal and opposite reaction |
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Shuttles |
Transport personnel and equipment to orbiting spacecraft |
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Probes |
Contain instruments for exploring space robotically |
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Space stations |
Orbiting spacecraft that allow people to live and work in space for extend3d periods of time |
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Hazards of space |
- no atmosphere, air, water - cosmic and solar radiation - meteroids - extreme temperature - psychological problems |
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The functions of the life-support system |
- recycling wastewater to produce water - using recycled eaters to produce oxygen - removing carbon dioxide from the air - filtering micro- organisms from dust from the air - keeping air pressure, temperature |
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What space technologies do we use on earth |
- computer technology - consumer technology - medical and health technology - industrial technology - transportation technology - public safety technology |
