Across
- 3. a group of billion of stars
- 4. the third planet in our solar system
- 7. the path a satellite follows as it revolves
- 8. the ecology levels are Organism, Population, _____ and Ecosystem.
- 9. living things ex. plants and animals
- 13. a force of attraction between any two objects example: the Sun and Earth
- 14. a large number of asteroids in orbit between Mars and Jupiter
- 16. a rocky object smaller than a planet that orbits the sun
- 18. the movement of one object in its orbit around another object in space
- 19. the Sun _____ on its axis
- 20. used to explore other planets
- 22. all the galaxies together form this
- 23. first American woman in space
- 24. this Kingdom is autotrophic
- 25. a cloud of gas and dust in space
- 27. the Sun is a large _____ in our galaxy
- 28. the planet with the most moons
- 29. we know this as a shooting star
Down
- 1. this domain has a nucleus
- 2. this includes Jupiter, Saturn, Uranus and Neptune
- 5. was the first space probe sent to Mars in 1976
- 6. nonliving things ex. water, soil, and temperature
- 10. Mercury, Venus, Earth and Mars are called
- 11. a ball of ice, rock, frozen gases, and dust that orbits the sun
- 12. large bodies in space that orbit the sun
- 13. supported the theory that the sun is the center of the solar system
- 15. largest object in our solar system
- 17. composed of at least one cell
- 21. first American in space
- 26. an envelope of gas surrounding a body in space
- 27. this includes the sun, planets and stars