Inner planets
Traits of inner planets
slow orbits, spins, no rings, and made of rock and metal/specifically, silicate minerals, iron, and nickel metal
Traits of Outer planets
made of helium and hydrogen, thick outer layer of gaseous and liquid interiors, many moons, and planetary rings
Traits of Dwarf Planets
not a satellite, orbits around the sun, not cleared neighborhood around its orbit, have adequate amount of mass, a celestial body that orbits the sun, enough mass make round shape, and is not a moon.
Description/explanation of planets orbits
orbits of the planets are ellipses with Sun at one focus, orbits of planets all more or less in same plane and orbit is the gravitationally curved trajectory of object
Different types of planets
terrestrial planets, gas giants, and ice giants
Composition of inner planets
Mercury, Earth, Venus is iron-nickel and Mars is liquid iron Sulfide and combined with nickel
Composition of Outer planets?
Hydrogen and helium
Composition of Dwarf Planets
water ice, carbon monoxide, nitrogen ice, and methane
Planets orbits discovery
orbits first formulated by Johannes Kepler, and Kepler found a universal relationship between the orbital properties of all the planets orbiting the Sun, explains the orbits of planets
What make a planet the way it is
an astronomical orbit around the sun, has enough mass for its-self gravity, overcomes strong body forces, it undertakes a hydrostatic equilibrium shape, has given space in area around orbit.
Inner planet formation
gases unite to form a protosun, temperatures in solar system increase, materials with high melting points stay solid. Inner solar system objects, made of iron, silicone, magnesium, sulfur, aluminium, calcium and nickel, some of these elements in compounds with oxygen.
Outer planet formation
contain water, methane that didn’t vaporize and these elements able to form giant planets, giant planets able to attract helium, hydrogen, and make most outer planets out of those two elements.
Dwarf planet formation
Dwarfs closer to sun like Ceres are rocky, icy, and possibly contain water, Pluto farther away from sun, made of rock, ice but not much water. Ones farther away are just ice
Kelper's Law
How the planetary bodies orbit the sun. Planets move in elliptical orbits, covers an area of space at same time no matter where it is in orbit, and orbit time is almost same as size of orbit.
Terrestrial planets formation and location
formed by accretion, as mass grows, gravitational forces increase, speed up growth, they will be large enough, grow to its limited size, and located between sun and asteroid belt.
What inner planets have that Outer planets don't
close to sun, small and rocky, no rings, few o no moons, made most of rock, iron core, thin to no atmosphere, large density, known by ancients
What Outer planets have that Inner planets don't
Inner vs. Dwarf planets
inner- near asteroid belt, clears space for orbit
Dwarf- Not planets, near Kuiper belt, not cleared area around orbit
Similarities- Round bodies, Orbit sun
Kelper's Law equation
T^2 = 4pi2/GM a^3
Gas giant formation and location
forms when a planet has more mass than earth and atmosphere develops quickly, forms gas giant, located in outer part of the solar system, asteroid belt. Gas giants mostly made of hydrogen and helium.
Similarities with Outer planets
Separated by asteroid belt, both orbit something
Similarities with inner planets
Both made of things like rocks or ice
Outer vs. Dwarf Planets
Outer- clear region of space where orbit sun
Dwarf- Don't clear space
Similarities- Both round
Laws describing planets orbit
three laws which are that planets move in elliptical orbits with sun, planet covers same area of space in same time, doesn’t matter where orbit is, also planet's orbital period is relative to size of its orbit
Ice giant/planet formation and location
Ice giants/planets formed when types of planets took part of solar nebula intact, ice giants like Uranus and Neptune made of heavier elements like oxygen, carbon, nitrogen, and sulfur.