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Voc.-Inner Planets

TermDefinition
Mars the fourth planet from the Sun. Known as the red planet. Rotation -24.6 hrs. Revolution 1.88 yrs 2 moons
gravity the force of attraction that moves (pulls) or tends to move bodies towards the center of massive objects, such as the sun, earth, or moon.
Earth the third planet from the sun; the only planet where life if found Rotation 24 hrs. Revolution 365 days 1 Moon
Astronomical Unit the average distance from Earth to the Sun - about 150 million Km or 93 million miles = 1 AU
Venus the second planet from the sun; visible as a bright morning or evening star. Rotation 244 days Revolution 225 days 0 moons
Planet an object that orbits the Sun, has a nearly spherical shape, and has a mass much larger than the total mass of all other objects whose orbits are close by. There are 8. 4 inner -terrestrial planets & 4 outer - gas gaints
Mercury the smallest planet, and the nearest to the sun
Rotation the time it takes an object to turn on its axis one time. The earth makes one rotation in 24hrs = 1 day
Sun the largest body in our solar system around which Earth and other planets revolve and receive heat and light
Revolution the time it takes an object to travel once around the Sun. The earth orbits the sun in 365 days = 1 yr.
Created by: jschroeder4
 

 



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