5 Written Questions

1. The planets whose orbits are farther from the sun than the earth's orbit
2. The apparent backward motion of a planet compared to other objects in the solar system
3. The place in the Earth's orbit where Earth is farthest away from the sun.
4. A measure of the force of gravity exerted on an object
5. A planet that orbits between the Earth and the Sun. Mercury and Venus are the only two inferior planets in our solar system.

5 Matching Questions

1. astronomical unit
2. Jovian
3. terrestrial planet
4. transit
5. ellipse

1. a Jupiter like; the four outer planets: Jupiter, Saturn, Uranus, Neptune; large/gaseous with rocky cores and low densities.
2. b The average distance from Earth to the Sun, approximately 150 million kilometers
3. c When a planet passes directly between the earth and the sun so that we see its dark silhouette against the sun's bright disk
4. d The elongated, closed curve that describes Earth's yearlong orbit around the Sun
5. e Planets that are similar to Earth in density and size

5 Multiple Choice Questions

1. The downward pull (gravitational force) a celestial body exerts on objects at its surface
   1. superior planet
   2. surface gravity
   3. transit
   4. gas giant
2. The name given to Jupiter's four largest moons, Io, Europa, Callisto & Ganymede. They were discovered by Galileo Galilei.
   1. perihelion
   2. gas giant
   3. aphelion
   4. Galilean moons
3. A large planet that consists mostly of gases in a dense form. The four large planets in the outer solar system- Jupiter, Saturn, Uranus, and Neptune.
   1. weight
   2. Jovian
   3. transit
   4. gas giant
4. Any of the celestial bodies (other than comets or satellites) that revolve around the sun in the solar system
   1. transit
   2. phase
   3. planet
   4. mass
5. The point at which the earth is closest to the sun.
   1. phase
   2. perihelion
   3. aphelion
   4. transit

5 True/False Questions

1. focus → To hide or to eclipse; to cross in front of

   True        False

2. Cassini's Division → A large planet that consists mostly of gases in a dense form. The four large planets in the outer solar system- Jupiter, Saturn, Uranus, and Neptune.

   True        False

3. occult → The point of geometric significance. One of two point sused to define an ellipse. (plural: foci)

   True        False

4. phase → Any of the celestial bodies (other than comets or satellites) that revolve around the sun in the solar system

   True        False

5. mass → One of the different apparent shapes of the moon as seen from earth.

   True        False