describe jovian and terrestrial planets
Terrestrial- first 4 planets (mercury, Venus, earth, mars) smaller diameters and great densities
few to no moons
rocky
heavy elements
Jovian- last 4 (Jupiter, saturn, Uranus, neptune)
many moons
revolve around the sun slowly’
light elements
eccentricty means?
circular orbit. smaller the number to more circular
which planet has the highest mean surface temp
venus
how did the solar system form
contraction of giant cloud of gas and debris
the planets beyond mars have….
shorter periods of rotation
how many degrees a day does earth move in its orbit around the sun
1
jovian planets have
larger sizes and periods of rotation
which 2 factors caused the inferred layered structure
gravity and density diff
what’s a comet
chunk of ice and rock orbiting
often referred to a dirty snowball
what’s a meteor
streak of light seen when space rock enters Earth’s atmosphere (shooting star)
what’s an asteroid
rocky/metallic object orbiting the sun between Mars and Jupiter (due to its intense gravity)
which planet takes slonger to complete one rotation on its axis than it does to complete one orbit of the sun
venus
what chaacteristic is directly related to a planets average distance from the sun
period of revolution
when did Uranus form
4.6 byo
the same side of the moon is always visble bec
the moon has a period of revolution equal to its period of rotation
what primarily control the moons cycle
the moons rate of revolution around the sun
eclipses don’t occur everytime the moon revolves around earth bec
the moons orbit is inclined to Earths orbit
what 2 phases will high and low tide be greatest at
new and full
how many days does it take to complete a full moon cycle
29.5
what are tides mostly based on?
Earths rotation, moons revolution
what percent of the mass in the solor system is contained in the sun
99
what’s a satellite
any object that revolves around another object
examples of satellites of the sun
planets, asteroid, comets, meteoroids
what’s Earth’s satelite
moon
