Michelle chen solar system pptPresentation Transcript
Michelle Chen 8C
Revolve: to circle around a bigger object
Rotate: to spin around its own axis
8 planets have been found in our solar system.
Mercury, Venus, Earth, and Mars are the inner planets.
Jupiter, Saturn, Uranus, and Neptune are the outer planets.
Inner planets are solid spheres made up of rock, while the outer planets are the gas giants, and they are separated by the asteroid belt. The outer planets have rings, while the inner don’t.
Inner planets have lots of craters on them because they have been bombarded by meteorites and asteroids in the first 600 million years.
Orbit: a specific path of a satellite or planet
A planet must be in orbit around the sun, have enough mass so it’s round because of its gravity, and have cleared out its orbit path.
Dwarf planets are a class of objects that meets the first two requirements to be a planet but failed to fulfill the third.
The three dwarf planets are Pluto, Ceres, and Eris.
THE INNER PLANETS
Mercury, Venus, Earth, Mars
Mercury’s atmosphere is caused by Solar Wind and Iron Bearing Core.
You can find sodium and helium on Mercury.
Volcanism, tectonic activities, and impact cratering helped shape Mercury.
It’s called the “Evening Star” because it is the brightest planet you can see from Earth.
Venus’s atmosphere is made up of carbon, oxygen, hydrogen, and sulfur.
Retrograde Rotation means having a direction which is opposite that of similar bodies.
It’s because Venus rotates slower than it revolves.
The sun seems to rise from the west because of its Retrograde Rotation.
Venus is the hottest planet, because the atmosphere has a greenhouse effect and locks the heat inside.
Oxygen, nitrogen, argon, water vapor, carbon dioxide, neon, methane, krypton, helium, xenon, hydrogen, nitrous oxide, carbon monoxide, nitrogen dioxide, sulfur dioxide, and ozone make up Earth’s atmosphere.
We are protected from radiation and meteors because of our atmosphere.
Rotational tilt: 23.5 degrees
The magnetic field is caused by the rapid spin and hot liquid metallic core.
The moon is the Earth’s satellite.
Meteorites made of pieces of Mars have landed on Earth, and scientists have found bacteria on them.
Carbon dioxide is the primary element.
Mars is covered with iron-laden clay, so the iron caused it to be reddish.
Olympus Mons is one of the biggest volcanoes in the solar system.
Deimos and Phobos are the satellites of Mars.
THE OUTER PLANETS
Jupiter, Saturn, Uranus, Neptune
Jupiter’s fast rotation causes its poles to flatten and sides to bulge.
Jupiter is made up of hydrogen, helium, sulfur, and nitrogen.
The Giant Red Spot is a giant storm (circular winds)
Jupiter has about 50 moons.
Io is volcanically active and the surface temperature is the highest of all in the whole solar system.
Hydrogen and helium make up Saturn’s atmosphere.
The rings are caused by the particles from the break-down of naturally occurred satellites.
The rings are composed of particles of satellites.
Saturn could float in water because of its low density.
Each season lasts more than 7 Earth years.
Because of its tilt of 98 degrees, Uranus seems to be rotating on its side.
Hydrogen, methane, and helium make up Uranus’s atmosphere.
Uranus has 27 known satellites.
Ammonia, helium, and methane make up Neptune’s atmosphere.
It has 13 known satellites.
Triton is Neptune’s largest satellite, and scientists think that Triton was not originally a satellite of Neptune, because of its retrograde orbit, density, and composition. It became Neptune’s satellite because of Neptune’s gravity.
THE DWARF PLANETS
Pluto, Ceres, Eris
Charon, Nix, and Hydra are Pluto’s satellites.
Scientists used spectroscopes and found water frost on Charon, and methane frost on Pluto.
Pluto and Charon may share the same atmosphere, also Charon is pretty large, it’s half the size of Pluto.
It takes Ceres approximately 4.6 Earth years to make one revolution.
There were other bodies orbiting in the same area as Ceres, and they were asteroids, so in 1802 Ceres became an asteroid.
Water ice, carbonates, and clays cover the surface of Ceres.
Xena was Eris’s original name.
It takes 557 Earth years to make one revolution.
Dysnomia is Eris’s moon.
Eris is not a planet, because its orbit path is not cleared out, therefore does not meet one of the requirements to become a planet.