1. Scientific
Investigation
Sound
Waves
Light
Matter
Living
Systems
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2. An educated guess or prediction about what will happen based on what you already know and what you have already learned from your research

3. What is a hypothesis?

4. The factor in an experiment that is altered by the experimenter

5. What is the independent variable?

6. The factor in an experiment that changes as a result of the manipulation of the independent variable

7. What is the dependent variable?

8. Things that are purposefully kept the same throughout the experiment

9. What is the constant?

10. A summary statement based on the results of an investigation

11. What is a conclusion?

12. A form of energy produced and transmitted by vibrating matter

13. What is sound?

14. Sound travels through this type of wave

15. What are compression waves?

16. The number of wavelengths in a given unit of time

17. What is frequency?

18. The amount of energy in a compression wave and is related to intensity and volume

19. What is amplitude?

20. This is determined by the frequency of a vibrating object

21. What is pitch?

22. Light waves that are neither transmitted nor absorbed, but are thrown back from the surface of the medium they encounter (looking into a mirror)

23. What is reflected?

24. The bending of a wave resulting from a change in its speed as it moves from one medium to another (putting a pencil in a glass of water)

25. What is refraction?

26. Light passes through these types of objects easily, such as a window or clear plastic

27. What is transparent?

28. Light travels through these types of materials partially, such as a stained glass window or wax paper

29. What is translucent?

30. Light cannot pass through these types of materials, such as metal or wood

31. What is opaque?

32. Anything that has mass and volume

33. What is matter?

34. The amount of matter in an object

35. What is mass?

36. A combination of two or more substances that do not lose their identifying characteristics when combined

37. What is a mixture?

38. A mixture in which one substance dissolves in another

39. What is a solution?

40. When two or more elements combine to form a new substance

41. What is a compound?

42. All living things are made up of these, which are too small to see without a microscope

43. What are cells?

44. These types of plants have special tissues to transport food and water, such as trees and flowering plants

45. What are vascular plants?

46. These types of plants do not have tissues to transport food and water, such as moss, liverworts, and hornworts)

47. What are nonvascular plants?

48. Animals that have backbones are called this

49. What are vertebrates?

50. Animals that do not have backbones are called this

51. What are invertebrates?