Across
- 1. hottest planet
- 3. Mercury is made of mostly _________
- 5. Mars has huge dust _______
- 7. Planet with one moon
- 8. Mars named after Roman God of _______
- 10. Earth's _____ take 365 days
- 11. the smallest planet
Down
- 1. Venus has a lot of _______
- 2. Mercury is 4.5 ________ years old
- 4. -81 degrees F is the _____ on Mars
- 6. 70% of the Earth's surface
- 9. Venus named after Goddess of beauty and _______