Space Flashcards
Geostationary satellite
Period - 24 hours
Altitude - 36000 km
Period of a satellite in a high altitude
Orbit is greater than the period of a sattalite lower a Lowe altitude orbit
Planet
Astronomical boys orbiting a star
Dwarf planet
Object less massive than a planet, in orbit around a star
Moon
A natural satellite which orbits planets
Sun
Star at the centre of the solar system
Asteroid
Astronomical objects that orbits the sun
Solar system
A star and all the objects orbiting around it
Exoplanet
Planet orbiting a star other than the sun
Galaxy
Gravitationally bound system of stars
Universe
All of spaceand time and it’s contents
Satellite
Weather forecasting- used to monitor the weather and climate of earth
Communications - amplify radio telecommunication signals
Scientific discovery and space exploration - used for scientific discovery and space exploration
GPS - space based radio-navigation system
Challenges of space travel - ion drive
Travelling large distance
Ions leave the drive as an ion beam, so producing thrust.
Produces small unbalanced force
Over long period of time craft will attain high velocity
Catapults and slingshots
To attain speed and direction
Uses gravity from planet, moon, or asteroid to assist space craft
Zero friction evironments
manovering in space, which is a zero friction environment, is challenging due to there being no resistive forces
Life support system
To provide enough energy for life support
Sera of solar cell would have to increase as the spacecraft travelled further fron the sun
Take-off
The thrust to propel the spacecraft out of the earths atmosphere is created by combustion of fuel
Radiation
The magnetic field strength that surrounds earth protects us from most of the solar and cosmic radiation
Radiation
The magnetic field strength that surrounds earth protects us from most of the solar and cosmic radiation
No magnetic field strength to defeat radiation
Re-entry
Space craft exposed to high temperatures
Friction between the space craft and the atmosphere causes plasma to form around spacecraft
Weight
Effect of gravitational field strength on an object
Mass
Amount of mater an object has
Light year
Distance light travels in one year
What happens as wavelength of radiation decreases
Frequency increases so energy of wave increases
Part of electromagnetic spectrum we can see
Visible light
Electromagnetic spectrum we cant see
Radio
Infra red
Gamma ray
Speed of light
3 times 10 to the power of 8
Gamma ray and x ray
Extremely high energy particles
Ultra violet
Active galaxies and quasars
Visible light
Chemical composition of stars
Infra red
For observation of central areas of galaxies and star forming ragions
Radio waves
Used to provide information about supernova, quasars etc
Large pressure difference between inside and outside of space craft creates
Very high temperatures
How old is the universe
14 billion years
