I know that the Earth, Sun and Moon are spherical. [ball-shaped]
I know and can explain that different parts of the Earth face the Sun during the course of the day and where it is day and night
I can explain that the apparent movement of the Sun is a result of the Earth rotating or spinning
I know that the Earth spins on its own axis
I know that the Earth takes one year to make one complete orbit of the Sun
I know and can explain the different phases of the Moon
I know that the Moon orbits the Earth once every 28 days