Explain the sun-moon relationship to your child. The sun gives off light and lights the earth during the day. The moon dimly lights the earth at night because it does not give off its own light. The moon reflects the sun’s light.
Demonstrate this principle with your child by having your child hold the sun (flashlight) and shining the light into a hand mirror. Explain that the mirror is like the moon and doesn’t give off its own light, but reflects the sun’s light.