Gravity

As we were driving home from picking Madisen up from school she asked me,

"Mom, so the eartf(earth) is round like a ball, so how can we drive on it? Because we would fall off and be upside down?"

Hmmm....I wasn't quite sure how to answer this as I had a brain *toot.

I said, Well the earth is so big, that it's like it's flat.

Madi: But it's not flat so how come we don't fall off.

We have gravity to pull us down.

Madi: Oh, ok. (like that made all the sense to her.)