Inner and Outer Planets Question of the Day

Inner and Outer Planets

Question of the Day All light is considered_____? WWBAT: Describe the characteristics of the inner planets Homework: none

Planets The international Astronomical Union (IAU) has defined a planet as an object that: Orbits the sun Has sufficient mass to be round, or nearly round Is not a satellite of another object (a moon) Has removed debris and small objects from the area of its orbit

Inner Planets Characteristics Overall: Also known as Terrestrial Planets Terrestrial=earth like Are relatively small and rocky Are 5 times more dense than water

Mercury Is the smallest planet in the Solar System A very dense planet One rotation: 59 Earth-days One revolution: 88 days Daytime temperature: 427 degrees C Nighttime temperature: -173 degrees C

Mercury

Venus Is Earth’s twin in size Similar to Earth’s Density One rotation: 243 Earth Days One revolution: 225 Earth Days Covered in thick clouds of poisonous sulfur gas Has many inactive volcanos Is extremely hot due to the greenhouse effect Temperature is about 475 degrees C

Venus

Earth Has one moon One rotation: 24 hours One revolution: 365. 25 days This is the planet used for reference for all the other planets

Earth

Mars 2 moons One rotation: 24 Earth hours One revolution: 687 Earth days Very thin atmosphere allowing for massive dust storms There are ice caps on the poles Meaning there was once water on the planet Many inactive volcanoes

Mars

Asteroid Belt Found between Mars and Jupiter This is the divider between the inner and outer planets These are rocky bits that are too small to be called planets These also will break away from the belt and head towards Earth

Question of the Day Name two characteristics of the inner planets WWBAT: Describe the outer planets and distinguish between the two kinds Homework: Finish the planet characteristics

Outer Planets Characteristics Overall: Also known as Jovian Planets Jovian=Jupiter like Are large gas giants Are 1. 5 times more dense than water Exception would be Saturn All have rings Exception would be Pluto

Jupiter 63 moons One rotation: 10 Earth hours One revolution: 12 Earth years Red spot is a storm the size of three earths Stripes are winds blowing in opposite directions The farther down the pressure increases to turn hydrogen into liquid

Jupiter

Saturn 56 moons One rotation: 10 Earth hours One revolution: 30 Earth years Has many rings that are visible through an optical telescope There are some spots like on Jupiter but are very small and more of them

Saturn

Uranus 27 moons with more to be discovered One rotation: 17 Earth hours One revolution: 84 Earth years This planet is turned on its side This could of happened by a giant impact The look is a bowl rolling instead of spinning like a top

Uranus

Neptune 13 moons One rotation: 16 Earth hours One revolution: 165 Earth years Wind speeds exceed 1000 km per hour There is an Earth sized blemish that looks and acts like the Jupiter storm

Neptune

Dwarf Planet An object that: Orbits the sun Is round, or approximately round Smaller than Mercury

Pluto 5 moon One rotation: 6 Earth Days One revolution: 248 Earth Years Is near the Kuiper belt Orbits the opposite the direction of the other planets During its revolution it will be closer to the sun than Neptune

Pluto

Other Dwarf Planets Ceres Found within the Asteroid belt and only dwarf planet within the planets Eris Orbit is well out of the same plane as the planets and goes out past Kuiper belt Haumea One of the fastest rotating large objects in our solar system Makemade 310 Earth years to complete one orbit around our sun

Size Comparison