Astrology Flashcards
Order of the Plants
Sun, Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus Neptune
Geocentric model
Earth-centered and all the planets orbit around the earth. Elliptical orbits
Heliocentric Model
Sun in the center and the Planets orbit around it.
Elliptical Orbit
when an object moves around another object in an ovular motion. All planets elliptically orbit around the sun.
Astronomical Units
The amount of distance from the EARTH to the SUN
Light Years
The distance of how far light travels in a year
Star Formation
- GIANT GAS CLOUD PHASEinitial collapse of an interstellar cloud–made up of dust and gas
- PROTOSTAR PHASE the cloud fragments form clumps then collapses due to gravity
- T-AURI PHASE is where the materials stop falling into the gas cloud and then it releases energy. The core cannot support nuclear fusion
- MAIN SEQUENCE. it is now hot enough to support the fusion conversion of hydrogen to helium in its core. Gives off a lot of energy
- RED GIANT PHASE–once the star runs out of hydrogen to convert, it collapses on itself and expands. subgiant star then red giant. It is cooler than a main-sequence star so it appears red instead of yellow
- THE FUSION OF HEAVIER ELEMENTS–helium fuses at the core and it expands. Once the helium fusion ends the core starts fusing carbon after the core shrinks–continues until iron is formed. iron causes the core to collapse–causes supernovas in big stars and small stars turn into white dwarfs
- SUPERNOVAE AND NEBULAE–most of the star is blasted away but the core turns into a neutron which turns into a black hole. Less massive nebula turn into white dwarfs.
Proto-plant hypothesis
very small objects stuck together and formed plants and very very large planets like Jupiter. The sun and other planets were essentially made from the same cloud.
Inner planets
tend to be rocky, shorter orbits, shorter spins.
mercury, venus, earth, mars
Outer planets
Big and gasoues
jupiter, saturn, uranus, neptune
Asteroids
a small rocky body orbiting around the sun
asteroid belt between jupiter and saturn
Comets
made up of dust and ice. The “tail” glows when it is close to the sun because heat is being released aka melting.
Meteoroids
small piece of rock flying through space with no particular pattern of orbit
Meteor
once a meteoroid enters earth’s atmosphere, it is now considered a meteor
Meteorite
once a meteoroid settles on a moon etc it is now called a meteorite
Altitude
The angle directly above the earth–measured from 0-90ºs.
An object that is directly overhead (with an altitude of 90 degrees) does not have an azimuth and is said to be at its zenith because it is just straight up
Azimuth
compass direction–measured clockwise from North. (0-359º)
Zenith
the angle between the sun and the vertical
how does a rocket work?
every action has an equal opposite reaction. In a rocket pressurized gas is let out of a chamber propelling the rocket to be thrust in the opposite direction (up). vary of ingredients like liquid oxygen, liquid hydrogen, and or gasoline.
Ion drives
newer technology for rocket propullsion–use electrically charged xenon gas to propel. weaker than a chemically generated rocket propeller but can last longer times–fuel reduction.
Solar Sails
harness’ the suns light to propel a spacecraft forwards. when the electromagnetic radiation from the sun reaches the carbon fibre of the sail–the transmitted energy moves it.
Rocket parts
nose cone, propulsion chamber, nozzle, fins, and payload
exhaust velocity
how efficeitnly a mass thing creates thrust
Hazards of living in space
gravity, waste management, food/water/oxygen resources, fuel/energy, temperature, radiation exposure, pressure.
