Space
Rotation/revolution. Compare and contrast rotation and revolution. Explain the relationship between these two and seasons.
Eclipses. What is the difference between a solar and a lunar eclipse?
Phases of the Moon. Explain and name the phases of the moon as it travels around the Earth in the course of a month.
Solar system and the Universe. Starting with our solar system, explain what a solar system is, what a galaxy is, and what the universe is.