Solar System Flashcards
Asteroids
Orbit between Mars Jupiter
Rocky objects
Dwarf planets
Mass is less than objects surrounding it
Comet comp
Gas dust ice
Orbits sun in ellipse
Meteor
Iron nickel rock that burns up entering earths atmos
Shooting star
Meteorite
When meteor impacts earth
Leaves crater
Astronomical unit
AU used to meas interplanetary dist
Base dist is km from earth to sun
Period of revolution
Time it takes an object to orbit sun
Period rotation
Time it takes object to complete one rotation
Sun revolutions
Planets further take longer to orbit
Terrestrial planets
Planets closest to sun Rock metal Solid outers Hg Venus Mars earth Inner planets Iron nickel cores
Mercury
No atmos due to Insufficient planetary mass needed to maintain gravitational pull on gases.
Impact craters remain due to lack of wind water erosion.
Venus
Earths size.
Orbits sun every 244 days.
Acid clouds cause hi CO2
Hottest planet in SS
Earth
Atmos keeps surface temp constant to support liquid water (along with dist from sun)
Outer planets
H He compositions.
Great mass creates strong grav force leading to hi atmos pressure that changes gases to liquids
Jupiter
OP Largest heaviest in SS Ring sys 12yrs to complete orbit 10hrs for a rotation 80%H 20%He Liq H surrounds core
