Across
- 3. material that allows electric currents to pass through
- 6. material that stops/reduces the flow of electric currents
- 7. a measure of how hot or cold something is
- 11. a small, hot, dim star that is the leftover center of an older star(two words)
- 12. the longest and shortest days of the year
- 13. a natural satellite that orbits Earth
- 15. Jupiter, Saturn, Uranus, Neptune(two words)
- 17. a relationship in which two different organisms live in close association with each other
- 21. an organism that only eats plants
- 22. the study of living organisms and their environment
- 24. rocky body that orbits the sun
- 27. the apparent growing of the moon
- 28. a diagram that shows the feeding relationship between organisms(two words)
- 30. icy body that orbits the sun
Down
- 1. Mercury, Venus, Earth, Mars(two words)
- 2. the amount of time it takes Earth to revolve around the sun
- 4. huge, hot, bright balls of gas that are trillions of kilometers away
- 5. an object that orbits a planet; can be natural or artificial
- 8. when the day is as long as the night time
- 9. a measure of the amount of matter in an object
- 10. the mixture of gases surrounding a planet
- 14. nonrenewable energy resource formed from the remains of organisms(two words)
- 16. not living and never has lived
- 18. a giant star that we orbit
- 19. an organism that only eats animals
- 20. the study of living things
- 23. when the moon appears to be decreasing in size
- 25. an organism that eats plants and animals
- 26. the amount of time it takes Earth to rotate
- 29. a large region characterized by climate, plants, and animals