Our Solar System

What is in the center of solar systems? stars planets meteoroids black hole What is older the universe or our solar system? the universe our solar system How many planets are in our solar system? 6 7 8 9 How did our solar system form? How did our solar system start? a stellar explosion known as a supernova a cloud of spinning gas a dust contracting planetesimals colliding What force makes the cloud of dust shrink? supernova gravity fusion heat What are Planets? In order for a object to be a planet it has to: (pick all the rules that apply) has its own orbital zone revolves around a star has a nearly round shape rotates How are planets classified? Fill in on image: Terrestrial, Jovian Terrestrial Jovian Solar System Data Using the chart above fill in the blanks below: 1) Mean distance from Sun: average distance in millions of kilometers from the Sun a. Which planet is closest to the Sun? Mercury What is the distance from the Sun to this planet? 57.9 million km b. Which planet is farthest from the Sun? Neptune What is the distance from the Sun to this planet? 4,498.3 million km2) Period of revolution: amount of time to move around the Sun one time a. Which planet has the shortest period of revolution? Mercury State the period of revolution for this planet. 88 days b. Which planet has the longest period of revolution? Neptune State the period of revolution for this planet. 164.8 years3) Period of rotation: amount of time to spin one time a. Which planet has the shortest period of rotation? Jupiter State the period of rotation for this planet. 9 hours 50 minutes 30 seconds b. Which planet has the longest period of rotation? Venus State the period of rotation for this planet. 243 days4) Equatorial diameter: size of the planet at the equator a. Which planet has the greatest equatorial diameter? Jupiter State the equatorial diameter of this planet. 142,984 km b. Which planet has the smallest equatorial diameter? Mercury State the equatorial diameter of this planet. 4,879 km5) Mass: amount of matter of the object compared to the Earth’s matter a. Which planet has the greatest mass? Jupiter b. Which planet has the smallest mass? Mercury6) Density: amount of matter in the given space of the object a. Which planet has the lowest density? Saturn b. Which planet has the greatest density? Earth Checkpoint - Planets Which two characteristics do all Jovian planets have in common? small diameters and low densities small diameters and high densities large diameters and low densities large diameters and high densities Which planet has completed less than one orbit of the Sun in the last 100 years? mars mercury neptune uranus Which sequence lists the Jovian planets in order of increasing mass? Jupiter, Saturn, Neptune, Uranus Uranus, Neptune, Saturn, Jupiter Jupiter, Saturn, Uranus, Neptune Neptune, Uranus, Saturn, Jupiter Which sequence lists the Terrestrial planets in order of increasing mass? Mercury, Venus, Earth, Mars Mercury, Earth, Venus, Mars Mercury, Mars, Venus, Earth Earth, Venus, Mars, Mercury