Across
- 3. the different shapes of the moon seen from Earth
- 5. anything that has mass and takes up space
- 7. all of the members of one species living in a particular area at the same time
- 8. the average annual temperature and amount of precipitation
- 10. a force that attracts all objects towards each other
- 11. the process by which a cell captures energy in sunlight and uses it to make food
- 13. chain a series of events in which one organism eats another and obtains energy
- 14. a possible answer to a scientific question; an educated guess
- 16. When the sun is the furthest north or south of the equator
- 17. a carnivore that feeds on the bodies of dead organisms
- 19. the type of planets that are small and rocky
- 20. energy that results from the position or shape of an object
- 21. mass divided by volume
- 23. model that stated the sun revolved around Earth
- 24. a substance made of two or more elements that are combined in a set ratio
- 25. A gas law describing the relationship between temperature and volume when pressure is constant
- 30. A change in state from a solid to a liquid
- 31. flat dark areas on the moon
- 32. any relationship in which two species live closely together and at least one species benefits
- 34. a factor that is part of an organism's habitat that is living or was once living
- 35. the layer of the sun where nuclear fusion occurs
- 36. A ____________ has a definite shape and definite volume
Down
- 1. the variable that stays the same in an experiment
- 2. a characteristic of a substance describes its ability to change into a different substance
- 4. the behaviors or physical characteristics that allow organisms to successfully live in their environments
- 6. the spinning of Earth on its axis
- 9. a living thing
- 12. system consists of the sun, planets and their moons, and a variety of smaller objects
- 15. another word for consumer
- 18. an area mainly populated with grasses and nonwoody plants
- 22. a substance that cannot be broken down into any other substances by chemical or physical means
- 26. the community of organisms that live in a particular area, with their abiotic factors
- 27. factor an environmental factor that causes a population to stop growing or decrease in size
- 28. an object that orbits the sun, is rounded by its own gravity, and has cleared the area of its orbit
- 29. cycle the continuous processes of evaporation, condensation, and precipitation
- 30. the amount of matter in an object
- 33. a streak of light produced when a meteoroid enters Earth's atmosphere