How to Explain Heaven and Hell to a Seven-Year-Old

Josh in Idaho USA says I have a very curious and inquisitive seven-year-old son he recently became a Christian and was baptized. He's got many good questions on heaven and hell that I've been having a difficult time answering. What do you suggest explaining the difficult questions of the afterlife to a seven year old? We need to teach our children that we are human beings made to live at the intersection of heaven and earth where our god dimension is working together all the time. God promises a new creation in which heaven and earth will come together look at Ephesians chapter 1 verse 10, Revelation 21 and 22.