Greek
The meaning of the root, "tri"
What is three?
The meaning of the root, "di".
What is two?
The meaning of the roots, "sub".
What is under/below?
The meaning of the roots, "meter".
What is measure?
The meaning of the root, "phone/phon".
What is sound?
The meaning of the root, "luc/lum".
What is light?
The meaning of the root, "geo."
What is earth?