List one of the two outer boundaries of the Solar System.

• Oort Cloud
• Asteroid Belt
• Saturn's Rings
• Frost Line

One astronomical unit is the distance between the Sun and the Earth. How many kilometers (km) = 1 astronomical unit (au)? (round to the nearest million)

• 150 million km
• 150 million miles
• 93 million miles
• 93 million km

How many stars are in the most common type of star system?

• 2
• 1
• 3
• 4

Give me one of the two names for our own star system.

• Solar System
• Earth's Neighborhood
• The Sun's Digs
• Jupiter's Palace

In what direction do MOST of the bodies of the solar system both rotate and revolve from +Z?

• Counter-Clockwise
• Clockwise
• North
• South

List the three main types of small bodies (SSSBs).

• Asteroids, Meteoroids, Comets
• Mercury, Pluto, Ceres
• The Moon, Io, Titan
• Jupiter, Saturn, Neptune

List two terrestrial (rocky) planets.

• Mars, Mercury
• Sun, Polaris
• Earth, Pluto
• Ganymede, Europa

List two Jovian (gas giant) planets.

• Uranus, Saturn
• Earth, Mars
• Titan, Demos
• Jupiter, Mercury

List two dwarf planets.

• Makemake, Pluto
• Mercury, Mars
• Neptune, Uranus
• Phobos, The Moon

List one difference between stars and planets

• Stars give off energy.
• Planets are larger.
• Stars are all one color
• Planets explode