Across
- 5. These are used to send and receive messages through radio signals.
- 8. This word means that the Earth is the center of our solar system.
- 11. ________ observations were difficult until the invention of the telescope.
- 14. This word means that the sun was the center of our solar system.
Down
- 1. This term is used to describe objects in space.
- 2. My teacher has to ________ my progress in math.
- 3. Plants are __________.
- 4. I met all the ______ for the project and received an A+.
- 6. I measured the distance to be ___________ 10 feet.
- 7. The distance between two points on a circle and through the center point.
- 9. A cloud of gas and dust in space.
- 10. If my ______ is accurate, I will earn $10.
- 12. Relating to the earth or those who live there.
- 13. Pluto is no longer considered a _______.
- 15. The New Horizons spacecraft will _____ Pluto.