1.Which planet is sometimes referred to as the “Red Planet”? A.Mars

2.Which planet is the largest in our solar system? A.Jupiter

3.What is the most abundant gas in the atmospheres of the gas and ice giant planets? A.Hydrogen

4.Which of the following planets has the shortest orbital period around the sun? A.Mercury

5.Which best describes a minor planet? A.A celestial body that orbits the sun and is generally smaller than a planet

6.About how many moons are in the solar system? A.More than 200

7.Which of these is not a planet? A.Nebula

8.What is the closest star to our sun? A.Proxima Centauri

9.How long does it take for light to travel from the sun to Earth? A.About 8 minutes

10.What type of celestial body is the sun? A.A star

11.What is the name of the asteroid belt located between Mars and Jupiter? A.Main Asteroid Belt

12.In what year was Pluto reclassified from a planet to a dwarf planet? A.2006

13.What is the study of the motions of objects in the Solar System called? A.Celestial Mechanics

14.Which of these processes is responsible for the creation of planets? A.Accretion

15.Which of the following celestial bodies is not in the solar system? A.Barnard’s Star