We were traveling down the highway with the sun passing in and out of some low clouds. The following is a conversation that I had with Little Abbey:
Little Abbey: Look Daddy, the sun is moving.
Daddy: No... the clouds are moving.
Little Abbey: No Daddy, the sun is moving.
Daddy: It just looks like the sun is moving but actually the clouds are moving and the sun is standing still.
Little Abbey: But Daddy, the sun goes down.
Daddy: Yes, the sun is moving. (Your first physics lesson must wait for another day.)