Across
- 2. Affecting part of the world, such as a country.
- 4. A study conducted in a natural environment.
- 8. An increase in Earth’s average surface temperature.
- 12. Tiny organisms that make their own food.
- 13. Anything added to the environment that is harmful to living things.
- 16. A period in history when humans started using machines to produce food and other products.
- 19. A worldwide network of computers.
- 22. Similar to the control group, except for the variable being tested.
- 24. What is tested in an experiment.
- 25. The process of making sense of an experiment’s results; also the 5th step in the scientific method.
- 29. A science magazine.
- 30. The effect of an action.
- 31. All of the living and nonliving things found in an area.
- 32. A well-tested hypothesis that explains many scientific observations.
- 33. The characteristics of the land.
- 35. A basic-law or truth.
- 37. The study of how living things, including humans, interact with their environment.
- 42. Using more resources than can be replaced.
- 44. Another word for farming.
- 47. Variety.
- 48. When no members of a species remain.
- 49. A personal Belief that can affect an experiment’s results.
- 51. The languages, religions, customs, arts, and dress of a people.
- 53. Questioning or doubting.
- 54. An educated guess; also the third step of the scientific method (plural: hypotheses).
- 55. Radiation Radiation that is made up of electric and magnetic waves.
- 56. Not influenced by personal feelings or opinions.
- 57. An organism’s natural and human-made surroundings.
- 58. A process in which a coral dies and turns white.
- 59. Dealing with environmental problems in a way that treats people equally.
Down
- 1. The variety of life on Earth; another name for nature.
- 3. Affecting a certain place.
- 5. The basic unit of life.
- 6. Helping to decide right or wrong.
- 7. A period in history when hunter-gatherers learned to farm and raise animals for food.
- 9. The group in an experiment that has no variable changed.
- 10. A material found in nature that is useful to humans.
- 11. The place where an organism lives.
- 14. A chemical organisms need to grow.
- 15. A person who hunts, gathers food, and moves from place to place to survive.
- 17. A group of organisms that can breed with each other.
- 18. All living and nonliving things found in nature.
- 20. A group.
- 21. To produce in large quantities using machines.
- 23. Information collected during experiments.
- 26. Any chemical used to kill or control pests.
- 27. Affecting the entire world.
- 28. A society where current needs are met while preserving natural resources and systems for future generations.
- 31. A set of moral principles.
- 34. To break apart.
- 36. To breed and produce offspring.
- 38. What is important to a person.
- 39. A living thing; one of many different forms of life.
- 40. The ability to do work; found in many different forms.
- 41. A repeating pattern.
- 43. Influenced by personal feelings or opinions.
- 45. A series of steps used to test possible answers to scientific questions.
- 46. A field of study that uses scientific knowledge to solve practical problems.
- 50. What humans have made, such as roads and buildings.
- 52. The scientific name for modern humans.